Trump promises to sign executive actions to address immigration and border security. Some will likely spark legal battles.

While the president has a broad range of immigration and national security powers, he cannot change US law on his own.

One of the executive orders, which will target birthright citizenship, is sure to spark a legal battle over the 14th Amendment.

Public health experts say U.S. withdrawal from the W.H.O. would undermine the nation’s standing as a global health leader and make it harder to fight the next pandemic.