(May 27) Senate Republicans are ready to deploy the filibuster to block a commission on the Jan. 6 insurrection, shattering hopes for a bipartisan probe of the deadly assault on the U.S. Capitol and reviving pressure on Democrats to do away with the procedural tactic that critics say has lost its purpose. The vote Thursday would be the first successful use of a filibuster this year to halt Senate legislative action. Most Republicans oppose the bill, which would establish a commission to investigate the attack by Donald Trump supporters over the election. “We have a mob overtake the Capitol, and we can’t get the Republicans to join us in making historic record of that event? That is sad,” said Sen. Dick Durbin of Illinois, the No. 2 Senate Democrat. “That tells you what’s wrong with the Senate and what’s wrong with the filibuster.” The filibuster is a time-honored Senate tradition that requires a vote by 60 of the 100 senators to cut off debate and advance a bill. With the Senate evenly split 50-50, Democrats would need support of 10 Republicans to move to the commission bill. The House already approved the measure with some Republican support, but the Senate filibuster is sparking fresh debate over whether the time has come for Democrats to change the rules and lower the threshold to 51 votes to take up legislation. Trump has made it clear he opposes the formation of any panel to investigate the Jan. 6 mob siege, when his supporters mounted an assault in a failed effort to overturn Joe Biden’s election. Democrats are warning that if Republicans are willing to use the filibuster to stop an arguably popular measure, it shows the limits of trying to broker compromises, particularly on bills related to election reforms or other aspects of the Democrats’ agenda. Ahead of Thursday’s vote, the mother of the late Capitol Police officer Brian Sicknick said Wednesday she would meet with lawmakers to try to persuade them to act. Sicknick was among many officers protecting the building, some seen in videos in hand-to-hand combat with mob. He collapsed immediately after engaging with the rioters and died the next day. “I suggest that all Congressmen and Senators who are against this bill visit my son’s grave in Arlington National Cemetery and, while there, think about what their hurtful decisions will do to those officers who will be there for them going forward,” Gladys Sicknick said in a statement. Subscribe to our YouTube channel: https://bit.ly/2TwO8Gm Bloomberg Quicktake brings you live global news and original shows spanning business, technology, politics and culture. Make sense of the stories changing your business and your world. To watch complete coverage on Bloomberg Quicktake 24/7, visit http://www.bloomberg.com/qt/live, or watch on Apple TV, Roku, Samsung Smart TV, Fire TV and Android TV on the Bloomberg app. Connect with us on… YouTube: https://www.youtube.com/user/Bloomberg Breaking News on YouTube: https://www.youtube.com/c/BloombergQuickTakeNews Twitter: https://twitter.com/quicktake Facebook: https://www.facebook.com/quicktake Instagram: https://www.instagram.com/quicktake