House Oversight and Government Reform Committee Chairman Darrell Issa (R-Calif.) wants to hear from two Cabinet officials — Commerce Secretary John Bryson and Energy Secretary Steven Chu — as part of an investigation into the Energy Department’s loan program.

Republicans alleged at a hearing Wednesday that Bryson, while chairman of BrightSource Energy, planned to lobby the White House for speedy finalization of a $1.6 billion loan guarantee for the Ivanpah solar generation project in California.

Issa told The Hill on Wednesday that he plans to invite Bryson and Chu to an upcoming hearing on the BrightSource loan.

“As a matter of fact, we’re going to ask Secretary Bryson to come to the committee for his direct lobby effort of the White House,” he said.