When president Reagan gave citizenship to millions of illegal aliens in 1986 he was exercising the presidential power to grant?

To grant amnesty. President Reagan signed a sweeping immigration reform law, the Immigration Reform and Control Act of 1986. It opened the door to the legalization of 3 million indocumented immigrants who had arrived before 1982. Being illegaly in the United States is an offense, so Reagan granted amnesty to those people.

Aliens? really thats what you're going to call immigrants