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. 

That's a significant uptick compared with the 10 total federal actions prior House general counsel Thomas Hungar was tied to during his two and a half years leading the office. Kerry Kircher, who was general counsel from 2011 to 2016, represented the House in at least 25 federal cases, and Geraldine Gennet was tied to at least 29 suits during her decade as general counsel, according to online court records.