The eldest son of the GOP nominee made the apology in person after Obama and Mitt Romney wrapped up the final presidential debate on Monday night in Boca Raton, Fla. Tagg was among the Romney family members onstage after the event was over.

Last week, Tagg Romney said he wanted to “jump out of [his] seat and ... rush down the debate stage and take a swing” at Obama for the way he questioned his father’s integrity during the second debate.

In the same interview with North Carolina radio host Bill LuMaye, Tagg Romney said the maneuvering by the Obama campaign to portray his father was not unexpected, and that the Romney camp “[had to] kind of sit there and take our punches and then send them right back the other way."

The "swing" comment was widely discussed after the debate, and prompted MSNBC host Lawrence O’Donnell to challenge Tagg Romney to a fight on his show. 

Josh Romney, one of Tagg’s younger brothers, was asked on "The View" about the remark and joked, “[Tagg] has slugged me a couple of times; I assure you president Obama has nothing to worry about.”