Twenty-six progressive groups on Thursday sent a letter to Congress urging an investigation into Supreme Court Justice Brett Kavanaugh’s “sham confirmation process” last year. The groups claim that “many issues went unresolved during last year’s confirmation process, when Senate Republicans jettisoned all procedural norms and abandoned any sense of fairness, and they must be investigated.”

Congress should investigate “serious issues,” according to the letter, including “whether Justice Kavanaugh lied to the Senate; whether he sexually assaulted the women who credibly accused him of doing so; whether there are cases on which his impartiality might reasonably be questioned and from which he must be recused; whether he lied about his financial debt and how it was repaid; and whether he is ultimately fit to be a justice on the Supreme Court.”

The groups allege that Senate Republicans manipulated the confirmation process “at every turn.” They ask Congress to request access to the full set of Kavanaugh’s records for review and making them available to the public.

Kavanaugh faced 83 ethics complaints including his allegedly false statements during nomination proceedings to the DC Circuit in 2004 and 2006 and to the Supreme Court in 2018, inappropriate partisan statements, lack of judicial temperament, and disrespect for the member of the Senate Judiciary Committee. A panel of federal judges dismissed all of the complaints last December, holding that Kavanaugh is not subject to the ethics rules as a Supreme Court justice.