Neither the IRS Office of Chief Counsel nor the U.S. Department of Justice’s Tax Division has presidentially appointed and Senate-confirmed leaders currently in charge, making it difficult for either to take on significant tax projects.

The U.S. Senate is expected to vote soon on President Joe Biden’s pick to fill the IRS commissioner role, former acting IRS Commissioner Daniel Werfel. On Wednesday, Werfel moved closer to confirmation by clearing a procedural vote on the Senate floor. However, since taking office in 2021, Biden hasn’t nominated anyone as the Internal Revenue Service’s chief counsel or as the DOJ’s assistant attorney general in charge of the Tax Division. While the wait continues for Biden to nominate and the Senate to confirm people for those roles, the IRS Office of Chief Counsel and the DOJ’s Tax Division continue operating under the direction of temporary leaders.

Nominated and confirmed leaders are best suited to make major decisions, observers told Law360. Their endorsements in the form of nominations and confirmations give them political capital, according to Nathan J. Hochman of Ross LLP, a former assistant attorney general for tax. “I think that gives you a lot of political weight to get projects done,” Hochman said.