In recent rallies, former U.S. President Donald Trump pledged to revive the 1798 Alien Enemies Act as part of his anti-immigration strategy if re-elected. Trump’s approach involves targeting undocumented migrants and implementing “Operation Aurora” to arrest and deport gang members and suspected criminals. His proposals have raised legal and practical questions, as the Act, used sparingly in U.S. history, requires a formal declaration of war to be enforced. Experts remain skeptical of Trump’s plan, given the legal and logistical challenges it faces.