The Latest: Harry Reid endorses Clinton over Sanders

Senate Democratic Leader Harry Reid is endorsing Hillary Clinton for the Democratic presidential nomination.

Reid participated in his state's Democratic caucuses Saturday but voted as "uncommitted."

Reid said he took pains to remain neutral in the competition between Clinton and Bernie Sanders so he would not be accused of rigging the caucuses.

John Kasich is sending a message to Republicans who think he should drop out of the GOP presidential contest: "Forget about it."

John Kasich's campaign is unleashing a stream of attacks against Marco Rubio, saying it's time to "rethink the conventional wisdom" that Rubio is the establishment's best hope for defeating Donald Trump.

Kasich's campaign has sent three memos to reporters in fewer than 24 hours slamming Rubio's campaign strategy, saying he's proving to be a poor return on investment when comparing his campaign spending with his early-state finishes.

Collins said Trump has demonstrated he has "the guts and the fortitude" to help U.S. companies compete with China and take on foreign threats such as the Islamic State and North Korea.

Hunter sponsored a bill passed by the House last year that would shut down funding for so-called sanctuary cities like San Francisco that shield immigrants from deportation by federal authorities.

Democrats accused Republicans of following Trump in demonizing Latinos and dubbed the bill the Donald Trump Act.

Texas Gov. Greg Abbott has endorsed Ted Cruz for president, hoping to give the senator a boost as their home state's primary looms.

Democratic presidential candidate Bernie Sanders is adamant that he is not giving up on South Carolina despite leaving the state to campaign elsewhere days before this early voting state's primary.