The Alien Enemies Act of 1798 allowed the president to deport noncitizens considered dangerous. Allowed the president to ignore laws he believed unconstitutional. Made immigrants wait longer before becoming citizens. Made it a crime to criticize the federal government.The Alien Enemies Act of 1798 allowed the president to deport noncitizens considered dangerous. Allowed the president to ignore laws he believed unconstitutional. Made immigrants wait longer before becoming citizens. Made it a crime to criticize the federal government.