When Douglas Letter appeared before the U.S. Supreme Court this month to argue a pair of cases on subpoenas for the president’s private tax records, it was his third time before the justices since he was named House general counsel nearly 18 months ago.

During his tenure, the U.S. House of Representatives’ workload has reached staggering levels: Letter’s team has been involved in at least 31 federal lawsuits since January 2019. That includes 14 lawsuits where the House is an amicus, on top of an impeachment investigation and trial.