John,

Troubling reports have emerged that Donald Trump Jr. killed a rare argali sheep in Mongolia this summer — at night through a laser sight.

Argali sheep have long been threatened by hunting, and they're protected under the U.S. Endangered Species Act. Don Jr. reportedly killed this animal without a hunting permit.

That permit was eventually issued by Mongolia — but only after Trump Jr. reportedly met with its president, then left the country. He may get a pass abroad because of his name, wealth and connections, but the buck has to stop here.

Tell the U.S. Fish and Wildlife Service to deny any attempts to import this argali trophy under the Endangered Species Act.

Argali are the world's largest sheep, with beautiful curling horns that can reach 6 feet. Their populations dropped by 64% between 1985 and 2009. Over the past 12 years, U.S. trophy hunters imported 65 argali trophies from Mongolia. Now it's our job to ensure the president's son doesn't add to that deadly tally.

As we fight to curb the extinction crisis, rich and powerful trophy hunters shouldn't be jet-setting across the globe slaughtering wildlife at will.

And our Endangered Species Act — one of the strongest wildlife laws in the world — shouldn't be used to condone the thrill-killing of species already facing extinction. Letting trophy hunters pay to play with the lives of rare and vanishing wildlife, while poachers go to jail, creates an unjust system that undermines conservation.

Sign our petition today urging the Service to deny any attempt to bring this animal's horns, skin or parts into the United States.