Title 42 expiration will be "tough" but plan "will succeed," says Homeland Security secretary

Secretary of Homeland Security Alejandro Mayorkas said Friday U.S. officials knew the transition from the public health authority of Title 42 to "traditional" immigration authorities was "going to be tough," but that they're ready.

"We have had a plan for more than a year and a half, and we have been executing on that plan and we continue to execute on that plan," Mayorkas told "CBS Mornings."

An estimated 60,000 migrants were waiting near the U.S.-Mexico border as the Biden administration ended the Title 42 pandemic-era rule that has allowed authorities to expel those entering the country unlawfully, a top U.S. official told CBS News on Thursday. Title 42 expired overnight, at midnight.