AP News:副总统拜登访问墨西哥 强风暴袭击美国东海岸

Severe weather struck the U.S. East Coast with at least one deadly tornado touching down in Virginia. At least 4 people were killed in that state. Violent weather also ripped roofs off homes in Pennsylvinia.

Republican presidential candidate Marco Rubio is criticizing Republican frontrunner Donald Trump by name. Rubio was at a rally in Houston when he criticized Trump for not strongly opposing the federal health care law and for his views on the Israeli-Palestinian conflict.

Apple CEO Tim Cook says it would be bad for America if his company complied with the FBI and helped unlock an encrypted iPhone. The phone was used by one of San Bernardino shooters.

And vice president Joe Biden is in Mexico. He's leading a delegation to an annual US-Mexico economic summit.

Sandy Kozel, The Associated Press with AP News Minute.