Indiana Gov. Mitch Daniels today endorsed Mitt Romney for president, becoming the latest high-profile Republican to end his neutrality and urge unity behind his party's likely nominee.

Daniels, who declined to seek the White House because of family concerns, has a strong following among Republicans because of his budget work. He had been one of a handful of big-name Republicans who had yet to formally endorse Romney.

"Mitt Romney has earned our party's nomination and now deserves the support of every American still committed to government that serves the people rather than rules over them," Daniels said in a statement.

He said the former Massachusetts governor is the best to reverse the nation's "ruinous debts and anti-enterprise policies."

Daniels joins House Speaker John Boehner and Senate Minority Leader Mitch McConnell in the list of prominent Republicans who have ended their neutrality in the race. Romney has been picking up more big-name endorsements since Rick Santorum suspended his campaign last week.