Gowdy, R-S.C., and Goodlatte, R-Va., penned a letter Tuesday to Attorney General Jeff Sessions and Deputy Attorney General Rod Rosenstein.
"Matters have arisen‐both recently and otherwise‐which necessitate the appointment of a Special Counsel. We do not make this observation and attendant request lightly," Gowdy and Goodlatte wrote.
They pointed, specifically, toward the use of the infamous anti-Trump dossier used in the Foreign Intelligence Surveillance Court to obtain a warrant to spy on former Trump campaign adviser Carter Page.
"There is evidence of bias, trending toward animus, among those charged with investigating serious cases," they wrote. "There is evidence political opposition research was used in court filings. There is evidence this political opposition research was neither vetted before it was used nor fully revealed to the relevant tribunal."
Asked why a special counsel was needed, Gowdy told Fox News, "Congress doesn’t have the tools to investigate this... We leak like the Gossip Girls."