NEW: Matthew Quinn, Deputy Director of US Secret Service, testifies about the impact a DHS shutdown would have on his 8,000 personnel. "The next day, everyone will show up, we will continue to protect and serve, there would be no visible difference, there's no pause button on our mission, paychecks may stop but work will continue, but morale will fade as the bills come in." Quinn went on to say that a DHS shutdown would halt the reforms the agency is trying to make in the aftermath of the attempted assassination of President Trump in PA & will undermine their momentum. "We will feel the ripple effects...delayed contracts, diminished hiring, our efforts to train and deploy the best." Says they are trying to plan for high profile security events this year and the 2028 Olympics. "Our difficult mission becomes exponentially harder during a government shutdown."