(CNN) - Louisiana Gov. Bobby Jindal delivered a focused defense of Mitt Romney - and offense against President Barack Obama - on a conference call with reporters on Thursday, even declining to comment on Romney's sense of humor.
"I can't speak to the governor's sense of humor," Jindal said, in response to a question. "I think he's made it very clear, though: in this election, there's a fundamental choice. You've got one candidate, President Obama, who is doubling down on a failed policy... Governor Romney has made it very clear, one of his very first actions will be to repeal and replace this bad law."
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The Romney campaign organized the call for reporters to "discuss the costly disaster that is Obamacare" in the wake of a Congressional Budget Office report released Wednesday on the health reform law.
Six million Americans are expected to pay a penalty in 2016 for not obtaining health insurance as required under the reform law, the CBO report said, an increase from the CBO's initial estimate of 4 million who would be penalized.
Jindal's comment about Romney's sense of humor came after he was asked to respond to a comment Romney made at a Wednesday night forum when saying he would repeal Obama's health law and "replace it with, I think, the kinds of reforms we really need."
"Now and then the president says I'm the grandfather of Obamacare," Romney said Wednesday. "I don't think he meant that as a compliment but I'll take it. This was during my primary, we thought it might not be helpful."
The state-level health reform law Romney supported when governor of Massachusetts has been compared to the Obama overhaul. While Romney has expressed his staunch opposition to the federal law, he has explained that the Massachusetts measure he supported "fit the needs of the people in my state" and was appropriate on the state level.
After a week in which Romney found himself responding to secretly recorded video of a May fundraiser, Jindal was focused on his criticism of Obama.
The Louisiana governor said it amounts to tax increases and Medicare cuts, all while still leaving millions uninsured.
"The bottom line, this is a bad bill for America," Jindal said. "Obamacare needs to be repealed and replaced. The way we do that is to elect Governor Romney as our next president.
After the call, Obama campaign spokeswoman Lis Smith characterized Romney's campaign as "in a state of disarray."
"In the span of just 24 hours, Mitt Romney has said that it's a 'compliment' to be known as the 'grandfather' of Obamacare and also vowed to repeal it in its entirety," Smith said in a statement.
"What isn't in question are the disastrous consequences that Mitt Romney's vow to 'kill' Obamacare on 'day one' would wreak: insurance companies would be allowed to discriminate against Americans with pre- existing conditions, charge women higher premiums than they charge men for the same coverage, and kick kids off their parents' plans when they graduate from college or high school," she continued. "America can't afford to go back with Mitt Romney's out-of-touch policies."
– CNN's Gregory Wallace and Rachel Streitfeld contributed to this report