Republican Sens. Chuck Grassley (Iowa) and Ron Johnson (Wis.) are requesting details on the travel records for former Vice President Joe Biden’s son Hunter Biden as they turn their focus past the impeachment trial.

Grassley and Johnson — the chairmen of the Senate Finance and Homeland Security and Governmental Affairs committees, respectively — sent a letter to Secret Service Director James Murray saying they were requesting the documents as part of a probe into “potential conflicts of interest posed by the business activities of Hunter Biden and his associates during the Obama administration.”

“We write to request information about whether Hunter Biden used government-sponsored travel to help conduct private business, to include his work for Rosemont Seneca and related entities in China and Ukraine,” the two senators added.

As part of their request, the senators specifically want to know what sort of security detail Hunter Biden received while his father served as vice president, and a list of all dates and places Hunter Biden traveled with a protective detail.