Use of the Alien Enemies Act ... powers to decide on national policy toward non-citizens during wartime, requiring only that the executive proclaim the war, invasion, or threat before using ...

"I find and declare that [Tren de Aragua] is perpetrating, attempting, and threatening an invasion ... the National Archives, U.S. authorities used the law to place over 6,000 "enemy aliens ...

The Office of the Director of National Intelligence ... administration's definitions of invasion and predatory incursion, finding that "migration alone" is not sufficient to invoke the Alien ...

Invasive alien species become much harder and more expensive to manage as they establish and spread through the landscape. So preventing their arrival is vital. To help manage the invasive species ...

Australia is renowned for its native flora and fauna, but did you know the continent is also home to about 3,000 “alien” species ... invasive species threat, national authorities compile ...