Deadly siege focuses attention on Capitol Police

This undated image provided by the United States Capitol Police shows U.S. Capitol Police Officer Brian Sicknick, who died Thursday, Jan. 7, 2021, of injuries sustained during the riot at the Capitol. A native of South River, N.J., Sicknick served in the New Jersey Air National Guard and went on to a law enforcement career, which his family said was his lifelong dream. He joined the Capitol Police in 2008. (United States Capitol Police via AP)

Members of the U.S. Secret Service Counter Assault Team walk through the Rotunda as they and other federal police forces responded as violent protesters loyal to President Donald Trump stormed the U.S. Capitol today, at the Capitol in Washington, Wednesday, Jan. 6, 2021. (AP Photo/J. Scott Applewhite)

President Donald Trump speaks during a rally protesting the electoral college certification of Joe Biden as President, Wednesday, Jan. 6, 2021, in Washington. (AP Photo/Evan Vucci)

People shelter in the House gallery as protesters try to break into the House Chamber at the U.S. Capitol on Wednesday, Jan. 6, 2021, in Washington. (AP Photo/Andrew Harnik)

Police hold off Trump supporters who tried to break through a police barrier, Wednesday, Jan. 6, 2021, at the Capitol in Washington. As Congress prepares to affirm President-elect Joe Biden's victory, thousands of people have gathered to show their support for President Donald Trump and his claims of election fraud. (AP Photo/Julio Cortez)

Trump supporters try to break through a police barrier, Wednesday, Jan. 6, 2021, at the Capitol in Washington. As Congress prepares to affirm President-elect Joe Biden's victory, thousands of people have gathered to show their support for President Donald Trump and his claims of election fraud. (AP Photo/Julio Cortez)