Senate investigation of the Capitol invasion has only just begun — as many questions remain

On Wednesday, The Washington Postreported that a bipartisan group of senators has a new set of questions next week for federal law enforcement about the intelligence failures surrounding the pro-Trump invasion of the U.S. Capitol in January.

"Law enforcement will be grilled about the accusations that their warnings of potential violence were not robust enough," reported Jacqueline Alemany. "Defense officials will be expected to explain the slow deployment of National Guard troops as the extent of the assault became clear. And DHS will be under pressure to crack down more aggressively on domestic extremism."

"Sen. Gary Peters (D-Mich.), the chairman of the Homeland Security and Governmental Affairs Committee, told Power Up that the bipartisan group of senators involved in the joint investigation are still finalizing their witness list — but that hearings next week will also take a broader look at the extremist groups involved," said the report. "Peters said that he's personally most focused on the broader questions of domestic terrorism — which he called 'the most pressing security threat to the country.' He's spoken with DHS Sec. Alejandro Mayorkas — and Peters says he was promised action on this issue was forthcoming but declined to disclose any details."

The attack on the Capitol left five dead, including a police officer, and led to the impeachment of former President Donald Trump for incitement of insurrection.

Republicans are increasingly divided over even criticizing the riot in the first place, with Sen. Ron Johnson (R-WI) baselessly suggesting most of the participants were "festive" and the violence was incited by police and anti-Trump provocateurs.