A member of the Senate Judiciary Committee on Thursday released emails written by Supreme Court nominee Brett Kavanaugh during his time working in the George W. Bush White House.

The emails, released Thursday morning by U.S. Sen. Cory Booker, D-New Jersey, came after he promised to share the documents with the public. Booker, who questioned Kavanaugh on Tuesday about the emails, said in a press release that the exchanges showed Kavanaugh's “concerning views on racial profiling and affirmative action.”

The documents' release also comes amid a larger dispute over production of the nominee's past record, a bitter fight that has colored much of Kavanaugh's confirmation hearings. Senate Democrats have complained that the Trump administration has held up a significant portion—over 90 percent—of Kavanaugh's record, including from his work at the White House.

Kavanaugh, President Donald Trump's choice to serve on the high court, has described that period, between 2001 to 2006, as a “formative” time in his career. But Republican senators have defended the Trump administration's approach to document production, arguing those records are privileged.