The protesters repeatedly yelled, "Vote for climate now!" while Cruz spoke about inflation in the United States.
"Is this the moment to reform gun laws?" British reporter Mark Stone from Sky News asked the U.S. senator.
The panel investigating the attack on the Capitol asked U.S. Reps. Andy Biggs of Arizona, Mo Brooks of Alabama and Ronny Jackson of Texas to appear. They all said no.
Senators pressed the tech giant on the scope and scale of its digital advertising business. Republicans repeated long-running allegations of conservative bias.
Texas Sen. Ted Cruz — a "Princess Bride" superfan — expressed disapproval as the cast of the 1980s cult classic plans to reunite for a fundraiser on behalf of the Democratic Party of Wisconsin.
The unlikely union started with a tweet from the democratic socialist congresswoman, to which the conservative senator replied, "Here's something I don't say often: on this point, I AGREE."
Donald Trump once accused Ted Cruz's father essentially of being linked to the assassination of John F. Kennedy. On Monday, he flew to the Texas senator's hometown and gave him his full endorsement.
Republican Sen. Ted Cruz and challenger Beto O'Rourke sparred on immigration, health care, gun control and national anthem protests. The race could tilt the balance of power in the Senate in November.
To win, Beto O'Rourke needs to change the Texas electorate. But voter registration data suggests Democrats aren't registering enough voters to offset Republicans' structural advantages in the state.