President Donald Trump has made cracking down on immigration a policy priority for his second administration, deporting migrants living in the U.S. illegally and revoking the temporary protected status of migrants residing in the U.S. legally. The president recently said there were no illegal crossings into the U.S. via its southern border in May.

Legal experts warn that Donald Trump's suggestion to deport U.S.-born citizens is unconstitutional, despite a new Justice Department memo targeting naturalized Americans for denaturalization.