During the 2016 elections, officials within the Obama administration—including those at the cabinet level—spied on the Trump campaign in a number of ways.
The known methods of spying include the FBI’s FISA warrant on former Trump campaign adviser Carter Page, the unmasking of members of the Trump campaign by Obama officials Susan Rice and Samantha Power, informant Stefan Halper, national security letters, and foreign intelligence gathering.
The spying on the Trump campaign is currently under investigation by the Department of Justice Inspector General Michael Horowitz. Attorney General William Barr has said he is personally looking into the matter as well.
Original report by Jasper Fakkert