"They discussed bipartisanship in terms of the budget and getting something done," a Kirk spokesman said in an email to The Hill. "They discussed North Korean/Iranian nuclear programs. They discussed guns."

Kirk, who now holds the Senate seat previously held by Obama, has recently been involved in negotiations with Sen. Tom CoburnTom Coburn-trillion debt puts US fiscal house on very shaky ground Al Franken: 'I make fun of the people who deserved it' The more complex the tax code, the more the wealthy benefit MORE (R-Okla.) and Democratic Sens. Chuck SchumerCharles (Chuck) Ellis SchumerSenate Dems hold floor talk-a-thon against latest ObamaCare repeal bill This week: Senate wrapping up defense bill after amendment fight Cuomo warns Dems against cutting DACA deal with Trump MORE (N.Y.) and Joe ManchinJoseph (Joe) ManchinGOP sees fresh opening with Dems’ single payer embrace Trump steps up courtship of Dems The Hill's 12:30 Report MORE (W.Va.) over a compromise on gun background check legislation.

The call comes as Obama reaches out to a number of Republican lawmakers in the House and Senate. Obama hosted a closed-door dinner with a dozen Republican senators a week earlier. The discussion at the dinner focused on the budget and deficit reduction, according to senators who were at the dinner.

Kirk was not one of the senators at the dinner.

Obama is also set to meet separately with the Democratic and Republican caucuses in the House and Senate throughout the week.