Presumptive Republican presidential nominee Mitt Romney said Sunday that Democratic efforts to tie him to Rep. Todd Akin's (R-Mo.) controversial comments are "sad" and he reiterated that he adamantly disagrees with the congressman's recent remarks about rape and pregnancy.

"With all the issues America faces, for the Obama campaign to stoop to such a low level --  they understand and they are are wise enough to understand that people like myself who have asked Todd Akin to get out of the race, are doing so because we vehemently disagree with what he said, and believe it hurts our party and I think is damaging to women," Romney said on "Fox News Sunday."

Akin, the Republican nominee for the Senate in Missouri, said in an interview broadcast last weekend that "legitimate rape" rarely causes pregnancy. Romney and other prominent Republicans have have denounced the remark and called on Akin to end his campaign. Akin has so far resisted, and has vowed to continue all the way to November.

The Democratic National Committee, meanwhile, has tried to connect Akin's remarks to the GOP presidential ticket. Romney on Sunday called Akin's remarks "outrageous" and "uninformed."

Democrats also have raised the issue of Romney's offshore bank accounts. Romney responded Sunday, saying the attacks have come because the Democratic campaign "is not about the big issues America faces." He added that "all the taxes are paid exactly as owed and there are no tax savings by virtue of having that vehicle."

Romney will accept his party's nomination this week in Tampa, where the start of Republican National Convention has been delayed by a day because of concerns about the impact of Tropical Storm Issac on the region. Romney said Sunday he wants to underscore a broad message when he is nominated in Tampa.

"I'd like to people to stand back and say what are the big issues that America faces," he said.