While mostly symbolic, the move to revoke security clearances for over a dozen former officials has been seen as a warning to President Trump's adversaries.

Trump's memo continued, "This action includes, but is not limited to, receipt of classified briefings, such as the President's Daily Brief, and access to classified information held by any member of the intelligence community by virtue of the named individuals' previous tenure in the Congress.

President Trump issued a memo Friday rescinding the security clearances of more than a dozen individuals, including former President Joe Biden and his entire family, former Vice President Kamala Harris and Hillary Clinton.