Speaking in Austin, the president reflected on the gains of the civil rights movement.
Six House Republicans who are running for Senate this year in competitive states voted for the House GOP's 2015 budget.
In 2007 radio clip, McDaniel riffs on reparations for blacks and jokes about Spanish.
"He has embarrassed our party, our state and the institution of Congress,” he said.
All three Georgia Republicans running for the Senate voted against the bill.
Senate Majority PAC is looking to shore up the Dem after fallout over his comments last week.
His successor, Vance McAllister, is in trouble over a video of him kissing a staffer.
Joe Manchin says his party's attacks on the billionaires have gone too far.
The New Hampshire Democrat raised more than $1.5 million in the first three months of 2014.
He continues his strong fundraising pace to try and face Sen. Mark Begich (D-Alaska).