s the Chairman of the powerful Senate Judiciary Committee, Graham was in a position to control what subjects came up for review during the current DOJ expose of 2016 crimes - FISA Court misuse, unmasking by the Obama Administration, and using the FBI as an attack dog against the Trump campaign. He was, as is rumored, in love with John McCain, and thus was vulnerable to being drawn into McCain’s agenda. He likewise has strong feeling about Joe Biden. Thus despite his visible swing from an Anti-Trump stance in 2016 to a Pro-Trump stance in 2017, his loyalty is suspect.
Knowing Graham’s propensities, he was watched closely. The Biden camp is desperate to counter the slew of gaffs and documented history of demanding funds from China and the Ukraine in exchange for favors from the Obama Administration. All of this is on video and incorporated in 2020 election ads. It is not what Graham is being asked to do, but what he has agreed to do for his friend Biden that put him into hot water. The line was crossed when Graham agreed to support fabricated evidence against President Trump. Thus he is being held while this matter is discussed before the Tribunal courts.