Appeals courts ruled against Trump on deportations and tariffs. The Supreme Court must now do its part. ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌   ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 
Brennan Center for Justice The Briefing
The shape of the big showdown on presidential power is now coming into view.
Two appeals courts in the past few days have issued resounding rulings that many of President Trump’s high-profile moves on tariffs and immigration were illegal. Both cases will soon head to the Supreme Court. And after quietly granting Trump his way on so many matters, often without signing their names to orders, the justices will have no choice but to decide in the light of day: Stand up for the Constitution or lie down for Trump.
Last night, the Fifth Circuit Court of Appeals ruled that Trump’s use of the Alien Enemies Act was illegal. That law is the last remaining part of the Alien and Sedition Acts of 1798. It’s a wartime statute. Previously, it was used during the War of 1812, World War I, and most notoriously during World War II to detain vast numbers of innocent foreign nationals.
Here, hot off the presses, is the court’s ruling. It’s worth a read.
Trump has tried to use the Alien Enemies Act to detain and deport Venezuelan nationals without due process. The administration claims that they are part of an invasion force, conducting warfare against the United States.
The appeals court judges didn’t buy it. Even assuming the truth of Trump’s assertions that Venezuela is directing mass migration and gang violence in the United States — claims contradicted by Trump’s own national security leaders and intelligence reports — the judges found no “invasion or predatory incursion” by a foreign power as the statute requires.
“A country’s encouraging its residents and citizens to enter this country illegally is not the modern-day equivalent of sending an armed, organized force to occupy, to disrupt, or to otherwise harm the United States,” the court wrote. “There is no finding that this mass immigration was an armed, organized force or forces. It is an action that would have been possible when the AEA was written, and the AEA would not have covered it. The AEA does not apply today either.”
This ruling was the first by a federal appeals court to squarely address whether the Alien Enemies Act can be used this way. Of note, it was issued by the Fifth Circuit, widely considered the most conservative federal appeals court in the country.
Meanwhile, another federal appeals court found last week that Trump’s “liberation day” tariffs were illegal and unconstitutional. This ruling threatens to upend the trade war that has roiled global markets, stoked inflation, and driven away longtime U.S. allies.
The Constitution, after all, gives Congress the power to set tariff rates. Presidents cannot do so unilaterally any more than they can set income tax rates on their own. Some statutes have granted presidents specific powers, and Trump claims that the International Emergency Economic Powers Act (IEEPA) allows him to tax imports at will.
That’s nonsense, ruled the U.S. Court of Appeals for the Federal Circuit in a 7–4 vote.
“The statute bestows significant authority on the President to undertake a number of actions in response to a declared national emergency, but none of these actions explicitly include the power to impose tariffs, duties, or the like, or the power to tax,” the court said. “It seems unlikely that Congress intended, in enacting IEEPA, to depart from its past practice and grant the President unlimited authority to impose tariffs.”
As The Wall Street Journal noted, “Across three different courts, 15 judges have weighed Trump’s tariff maneuvers — and 11 of them, appointed by presidents of both parties, have found he acted without legal support.”
Trump says the government will appeal to the Supreme Court today, claiming that if the tariffs are struck down, it would be “a disaster for the United States.” Indeed, his argument seems to be: “Look what a mess we made. Cleaning it up will be worse.”
So what next?
This year, the Supreme Court has hardly covered itself in glory. In the face of the most aggressive expansion of peacetime presidential authority in history, the justices have — with just a few notable exceptions — squirmed and wriggled to avoid confronting the White House. Often they have backed Trump’s moves but done so quietly, in unsigned emergency docket orders.
These cases, though, will now be fully briefed and argued on the merits, heard in the bright spotlight of public attention.
The stakes go to the heart of American law. Can a president unilaterally set tariff rates, a power no chief executive has ever claimed before? Can a president unilaterally detain and deport migrants simply by asserting, without evidence, that they are gang members invading the United States on behalf of a foreign government?
In 1776, the Declaration of Independence decried King George for “cutting off our Trade with all parts of the world:
“For imposing Taxes on us without our Consent:
“For depriving us in many cases, of the benefits of Trial by Jury:
“For transporting us beyond Seas to be tried for pretended offences.”
Back then, Thomas Paine wrote in Common Sense, we had no sovereign. “In America, the law is King.” In the coming months at the Supreme Court, we will find out if that is still true.

 

What’s Next in the Plan to Meddle with Elections
Last month, President Trump said he planned to issue new executive orders seeking to single-handedly rewrite election rules — something the president does not have the constitutional authority to do. These potential orders plus actions already taken expose the likely next moves in the administration’s campaign to interfere with elections, including bogus investigations and prosecutions and attempts to meddle with vote counting. “Laying out this strategy gives state and local governments, pro-democracy civil society, and voters time to prepare and ensure that we have free and fair elections this November, in 2026, and in 2028,” Lawrence Norden and Sean Morales-Doyle write. Read more
Enforcing a Guardrail Against Presidential Overreach
A federal district judge ruled yesterday that President Trump’s use of National Guard troops and U.S. Marines in Los Angeles to carry out civilian law enforcement duties violates the Posse Comitatus Act. The decision is historic: It marks the first time a court has declared a violation of the 19th-century law, which bars the military from engaging in domestic law enforcement without explicit approval from Congress or the Constitution. “While this ruling is limited to California, and will undoubtedly be appealed, it nonetheless presents a path by which other states may push back against the Trump administration’s unprecedented efforts to use the military for routine law enforcement inside the United States,” Joseph Nunn writes. Read more
Legal Ethics and the Rule of Law
The second Trump administration has already seen politicized pardons, politically motivated investigations and prosecutions, and open threats to defy court orders, raising serious concerns about the rule of law. A new Brennan Center resource explains that in such an environment, “it is essential not only for government lawyers but also for the broader legal profession and the general public to understand the rules, standards, and commitments governing the practice of law.” Drawing on input from dozens of legal ethics experts and practitioners, the resource outlines the core rules and standards that all practicing lawyers both inside and outside government are required to follow. Read more
What to Know About Gerrymandering
Several states have pledged to redraw their congressional maps after Texas recently gerrymandered its map to produce five new House seats for the GOP. In light of the national attention now focused on the issue, the Brennan Center has updated its explainer on gerrymandering. It answers key questions, including how the practice works, why it’s undemocratic, and what can be done to stop it. Read more

 

Coming Up
VIRTUAL EVENT TOMORROW: The Next Phase of the Fight
Thursday, September 4, 3–4 p.m. ET
 
Challenges to democracy intensified over the summer. The Trump administration deployed the National Guard in California. The Supreme Court used its shadow docket to rule on presidential power. In Texas, an egregious gerrymander has sparked partisan battles nationally.
 
The coming months will mark the next phase of the fight for the Constitution. Will the rule of law hold? How will the 2026 election unfold? Join us for a virtual event highlighting some of the biggest news stories of the past three months. Brennan Center experts will break down what’s happened and what’s likely to come next in the struggle to uphold democratic values. RSVP today
 
Thursday, September 18, 3–4 p.m. ET
 
From issuing an unconstitutional executive order to pardoning violent January 6 rioters, President Trump is making a concerted push to undermine American elections — a drive that will likely gather momentum as the 2026 midterms approach. Join us for a live virtual discussion with Brennan Center experts about these unprecedented actions and ways to protect the integrity of the vote. RSVP today
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News
  • Kareem Crayton on Louisiana’s about-face in its Supreme Court redistricting case // THE ADVOCATE
  • Elizabeth Goitein on the legal questions raised by the potential military deployment in Chicago // THE WASHINGTON POST
  • Michael Li on the court order to redraw Utah’s congressional map // THE COOK POLITICAL REPORT
  • Lawrence Norden on the concerning new “election integrity” role at the Department of Homeland Security // PROPUBLICA
  • Daniel Weiner on the connection between the president’s deportation plans and his postelection fundraising // FINANCIAL TIMES