Julie Farnam, who supervised intelligence gathering for the U.S. Capitol Police at the time of the Jan. 6, 2021, attack, has received a subpoena to appear for a deposition by a Republican-controlled House subcommittee investigating security failures that day. “We are investigating the alleged failures within USCP IICD leading up to January 6 to assess what legislative reforms, if any, are needed,” Rep. Barry Loudermilk (R-GA), chair of the House Administration Oversight Subcommittee, told Farnam in a letter that she received late Friday. The subpoena sets up a confrontation between two pivotal…