The U.S. Capitol was locked down Wednesday with lawmakers inside as supporters of President Donald Trump overwhelmed Capitol Police and made their way inside the chambers of the House of Representatives and the Senate. The lockdown lasted nearly four hours. As a result, Congress was forced to abruptly halt deliberations Wednesday over Republican challenges to the results of the 2020 presidential election. Sen. Thom Tillis, R-NC, was not among the Republicans objecting to the Electoral College certification showing Democratic presidential challenger Joe Biden the winner. Tillis said the violence was "a national disgrace." "I proudly back the blue and support law and order, which is why I condemned the violence that took place in cities across the nation this summer," Tillis said on social media. "It's a national disgrace to have a mob attacking Capitol Police and engaging in anarchy. This is not what America stands for."