White House senior adviser Gene Sperling is leaving his administration position to work with Vice President Kamala Harris’ election campaign as the Democrats step up efforts to challenge Donald Trump on policy issues in November’s election.

Sperling will be a senior economic adviser to Harris’ policy team. The shift was revealed by White House officials who spoke on condition of anonymity to discuss personnel matters.

Sperling served both Bill Clinton and Barack Obama as director of the White House National Economic Council. President Joe Biden Biden tasked him with managing his $1.9 trillion pandemic aid package, a role in which Sperling implemented the temporary expansion of the child tax credit. He was also the White House liaison to the union and car companies during the auto strikes.