The super PAC aligned with House Speaker Paul Ryan, R-Wis., was scheduled Wednesday to hit Los Angeles television with an advertisement that accuses Democrat Gil Cisneros of being a sexual harasser who invested money in Iran.

The hard-hitting ad from Congressional Leadership Fund, directed at Orange County voters in California’s 39th Congressional District, aims to protect an open, Republican-held seat that could fall to the Democrats in the midterm elections. President Trump lost the historically Republican, suburban seat to Democrat Hillary Clinton in 2016.