In just three weeks, President Trump has set an all-too-familiar tone for his White House sequel: chaotic, dishonest, bullying and contemptuous of the rule of law.

Only it’s worse this time because Trump erroneously believes his narrow victory last November — he won the popular vote by just 1.5 percent — has given him a mandate to rule the U.S. by decree.

He’s lashing out madly in every direction — threatening our neighbors with massive tariffs, bullying small countries like Denmark and Panama whose territory he covets, proposing to depopulate and take over Gaza and settling scores with the very government he heads, which he imagines to be his worst enemy.

Americans are witnessing a naked power grab that would shred the Constitution’s checks and balances, rob Congress of its most important powers, neuter the courts and create the imperial presidency that Richard Nixon dreamt of long ago.