Republican Senate candidate Dave McCormick defended Tesla CEO Elon Musk on Wednesday over a cash sweepstakes that legal experts say falls in a gray area of federal election law. Since Saturday, Musk has been handing out $1 million checks to randomly drawn registered voters who sign a petition in support of the Constitution.

The Justice Department has reportedly sent a warning to Elon Musk’s super PAC that its brazen $1 million daily lottery aimed at getting people in swing states to register to vote may run afoul of federal law.

Musk shocked a crowd of roughly 1,500 at a nondenominational church in the Pennsylvania capital of Harrisburg on Saturday when he announced he was giving away $1 million. The first winner was John Dreher, who rushed to the stage in a signature red MAGA cap, pumping his arms in the air.