Sen. Ted Cruz, R-Texas, faced CNN’s Candy Crowley on Sunday, defending his plan to defund Obamacare and what he would do to fix health care in America.

Cruz praised the power of grassroots activists, suggesting that a “grassroots tsunami” was about to hit Washington D.C.

“It’s going to take a tsunami and I’m going to do everything I can to encourage that tsunami,” Cruz asserted.

Watch the entire interview above in which Cruz discusses his birth certificate, 2016, Gov. Chris Christie, and the battle for Republicans to win a majority in the U.S. Senate in 2014.