The campaign financial disclosures for September, released Thursday night, seem only to reinforce those worries: The Trump campaign spent more than half a million dollars on lawyers in just one month.

By way of comparison, Mitt Romney’s campaign spent just $1.15 million over the course of his entire 2012 presidential campaign. Trump’s spending on lawyers now tops $3 million.

“Hard to say if any of these legal representations represents a serious problem for the campaign, since we don’t know the subject matter of each one,” campaign finance lawyer Brett Kappel told The Daily Beast. “The overall level of spending on legal fees, however, remains extraordinarily high, indicating that there must be a great deal going on behind the scenes we don’t know about.”

Trump’s legal fees would be astronomical for any conventional political candidate, but of course the Republican nominee has a knack for drawing controversy, and all the lawyers that entails.