ORACLE, Ariz. — Protesters carrying “Return to Sender” and “Go home non-Yankees” signs faced off with immigrant rights activists Tuesday in a small Arizona town after a sheriff said a bus filled with Central American children was on its way.

The rallies demonstrated the deep divide of the immigration debate as groups on both sides — and in similar numbers — showed up in Oracle to speak out on the issue.

It turned heated at times, with shouting matches and a group of mariachi musicians getting shoved before the skirmishes were quelled. At one point, protesters temporarily blocked off a bus on the road before realizing it was just a school bus carrying children from a YMCA.

The protests came as the government released numbers that show how many immigrant families and children have been pouring into the country recently.

SACRAMENTO, Calif. — Silicon Valley venture capitalist Tim Draper began submitting signatures Tuesday for a ballot initiative that would ask voters to split California into six separate states, a move he said would create governments that are more manageable and responsive to residents' needs.Draper and a bipartisan team of political consultants delivered what he said were 44,000 signatures to the Sacramento County registrar of voters. The signatures are among 1.3 million the Six Californias campaign plans to submit statewide this week.If enough signatures are verified, voters in November 2016 would be asked to divide the nation's most populous state into six states called Jefferson, North California, Silicon Valley, Central California, West California and South California.

NEW YORK — Former Secretary of State Henry Kissinger underwent an aortic valve replacement procedure Tuesday at a hospital in New York.New York-Presbyterian Hospital in Manhattan released a statement saying the 91-year-old ex-diplomat was “resting comfortably” following the procedure.The hospital declined to release any other information. A spokesman for Kissinger would not comment.Last year, Kissinger was admitted to the same hospital after a fall in his home.Kissinger served under presidents Richard Nixon and Gerald Ford. He was awarded the Nobel Peace Prize in 1973 and the Presidential Medal of Freedom in 1977.