A spokesman for Grassley said he could not elaborate on what the records contained at this time but criticized Democrats for "recklessly" seeking to interfere with the investigation.
"As a matter of routine, we don’t discuss sensitive third-party material during ongoing investigations. It’s unfortunate that Democrats whom we’ve kept in the loop on our investigations would recklessly seek to interfere with legitimate government oversight," Grassley's spokesman Taylor Foy told the Washington Examiner.
Grassley's and Johnson's committees have been investigating whether the Obama administration took official action to help the business interests of Biden while his father, Joe Biden, was vice president.