Ari Blaff of National Review Online reports a disturbing revelation involving the nation’s best-known law enforcement agency.

As part of its effort to identify extremists in the Catholic Church, the FBI recruited at least one “undercover employee” to “develop sources among the clergy and church leadership,” Representative Jim Jordan (R., Ohio) revealed Monday.

Jordan, the chairman of the House Judiciary Committee, issued a subpoena demanding FBI director Christopher Wray testify and provide more information to Congress about the federal agency’s intelligence-gathering initiative targeting Catholic Americans.

“This shocking information reinforces our need for all responsive documents, and the Committee is issuing a subpoena to you to compel your full cooperation,” Jordan claimed in the letter.

“Americans attend church to worship and congregate for their spiritual and personal betterment,” the letter added. “They must be free to exercise their fundamental First Amendment rights without worrying that the FBI may have planted so-called ‘tripwire’ sources or other informants in their houses of worship.”

The weaponization committee demanded that the FBI turn over information related to its investigation of Catholics after a former FBI agent leaked a memo entitled, “Interest of Racially or Ethnically Motivated Violent Extremists in Radical-Traditionalist Catholic Ideology Almost Certainly Presents New Mitigation Opportunities.” The memo, issued by the bureau’s Richmond field office, relied on information compiled by the biased Southern Poverty law Center about alleged “extremist” Catholic communities that prefer the Latin Mass and hold to conservative social teachings.

“In making this assessment, FBI Richmond relied on the key assumption that [racially or ethnically motivated extremists] will continue to find [radical-traditionalist Catholic or RTC] ideology attractive and will continue to attempt to connect with RTC adherents, both virtually via social media and in-person at places of worship,” the January, 23 memo states.

Jordan wrote in the Monday letter that the FBI has not been sufficiently responsive to demands for further documents related to the investigation of Catholics, and demanded that Wray explain the lack of cooperation.