Sen. John Fetterman, D-Pa., said it would be “fantastic” of President Donald Trump to release the government’s files on aliens.

Based on “tremendous interest shown,” Trump said in a social-media post Thursday night, he will direct the defense secretary and relevant departments to begin the process of releasing government files...

Trump made the announcement in a social media post hours after he accused former President Barack Obama of disclosing “classified information” when Obama recently suggested in a podcast interview that...