The House Oversight Committee launched an investigation into the State Department on Wednesday over allegations that U.S. Special Presidential Envoy for Climate John Kerry has been meeting frequently with climate and environmental activists.

Oversight Chairman James Comer (R-KY) sent a letter to Secretary of State Antony Blinken asking him to provide unredacted documents and communications related to Kerry’s “collusion with leftist environmental groups,” as well as information on the composition of Kerry’s office, known as SPEC, and payroll. He is asking for the requested documents to arrive at the committee no later than Feb. 21 and cover the time period from Jan. 20, 2021, to the present.