The head of a government watchdog group said the Justice Department has plenty of reason to investigate whether President Trump knowingly omitted information on his federal financial disclosures, following the revelation late Wednesday that he reimbursed his personal lawyer for a hush money payment to porn star Stormy Daniels to keep silent about her alleged affair with his client.

In a series of tweets, Norman Eisen, a one-time Obama White House ethics lawyer and chairman of Citizens for Responsibility and Ethics in Washington, said Trump may have committed a crime.