"We applaud those candidates who did sign the pledge for vowing to support and advance the protection of life at all stages if elected to the White House," she said. "Their signatures demonstrate that mere lip-service to protecting women and the unborn is not enough — it must be backed up by concrete action."
In addition to the taxpayer funding language, the pledge states that if elected, the candidate would support only Supreme Court nominees who are committed to "applying the original meaning of the Constitution" and "would select pro-life appointees for relevant cabinet and executive branch positions."
Romney's decision would seem to play better with general election voters. But among the more socially-conservative Republicans who vote in primaries, his abortion position could be a problem.
"I know the economy is the top issue, but the life issue can make the race," Musgrave said. "It's the pro-life people who show up."
Romney, meanwhile, hopes to patch things up with the SBA List, despite his refusal to sign.
"Governor Romney has been a strong supporter of the SBA List in the past and he looks forward to continue working with them to promote a culture of life," Saul said.
Terri Henderson, 6, center, whose mother is El Salvador, attends a rally with members of Congress at Union Station's Columbus Circle to announce the Restore Opportunity, Strengthen, and Improve the Economy (ROSIE) Act on July 29, 2014. The legislation provides incentives for government contractors to pay a living wage and other benefits that would help low-income workers.