Republican presidential candidate Jeb Bush pressed his attack on rival Marco Rubio's record of missed Senate votes, saying it showed Rubio had "given up" on breaking through the political gridlock in Washington.
Bush questioned whether Rubio, a U.S. senator from Florida, had shown the leadership skills or level of accomplishment needed to bridge partisan divides and solve longstanding problems.
"In this era of gridlock, it's really hard to break through, and I think he's given up. And I think that's the wrong thing to do," Bush, a former governor of Florida, said in an interview on NBC's "Meet the Press" that aired on Sunday.