The Department of Energy has been told to investigate allegations of corruption by William N. Bryan, the White House’s nominee for a senior post at the Department of Homeland Security, CQ Roll Call has learned.

Bryan joins a long line of Trump administration nominees who’ve faced controversy. Just this week, the White House withdrew the nomination of Jeffrey Byard to head the Federal Emergency Management Agency.

[Issa hearing delayed after dispute over background investigation]

The U.S. Office of Special Counsel told the Energy Department in a letter last month to investigate a whistleblower’s allegations that Bryan used his former position at DOE to funnel business to a private energy company.

The Office of Special Counsel made the referral because it found “a substantial likelihood of wrongdoing,” according to the letter.