When Philadelphia hosted the Democratic National Convention last summer, Pennsylvania donated a $10 million taxpayer-funded grant to help finance it.

The convention's host committee ended up with a $4 million surplus. None of that money made it back to the state, however, which has prompted several state officials to push for an audit.

Out of the surplus, about a million dollars went to bonuses for host committee employees.

Former Gov. Ed Rendell, a Democrat, chaired the panel, and confirmed those numbers to the Philadelphia Inquirer. He called the bonuses "appropriate."

But state lawmakers aren't so sure.

Senate President Pro Tem Joe Scarnati, a Republican, has called for the state auditor general to investigate the DNC's spending.

Gov. Tom Wolf said he's also on board.

"There are a lot of questions about what did happen with the surplus," he said, adding that "the integrity [of the committee] is something that people question."

An independent audit already concluded the spending wasn't inappropriate.

In a statement, Auditor General Eugene DePasquale said he hadn't yet received the necessary documents, but he intends to conduct his own review of the situation as soon as possible.