Ex-Speaker Newt Gingrich (R-Ga.) on Tuesday challenged Senate Majority Leader Harry ReidHarry Mason ReidTo end sugar subsidies, conservatives can't launch a frontal attack House presses Senate GOP on filibuster reform A pro-science approach to Yucca Mountain appropriations MORE (D-Nev.) to a debate on whether the government should continue to fund ObamaCare.

After Gingrich’s tweet, Reid responded Tuesday morning on Twitter, asking if the former Speaker was saying he supported a shutdown of the government.

Gingrich served as Speaker when the government shut down in 1995 over a spending fight between congressional Republicans and the Clinton White House. That fight didn’t go well for House Republicans at the time, as Clinton won reelection in 1996. 

Gingrich also said he’d love to have Reid on “Crossfire” when the show makes its return to CNN. Gingrich will be one of the show's new co-hosts. 

Sen. Mike LeeMichael (Mike) Shumway LeeRubio on push for paid family leave: ‘We still have to work on members of my own party’ National ad campaign pushes Congress to pass legislation lowering drug prices Senate Republicans call on Trump to preserve NAFTA MORE (R-Utah) is currently pushing a proposal that would shutdown the government if the Obama administration's healthcare law is not defunded. Republicans have been debating its merits, with a number of conservatives including Sen. Marco RubioMarco Antonio RubioTrump must send Russia powerful message through tougher actions McCain, Coons immigration bill sparks Trump backlash Taking a strong stance to protect election integrity MORE (R-Fla.) offering vigorous support. 

The proposal has been criticized by others, including Sen. Bob CorkerRobert (Bob) Phillips CorkerPentagon: War in Afghanistan will cost billion in 2018 K.T. McFarland officially withdrawn as nominee for ambassador K.T. McFarland withdraws as nominee for ambassador MORE (R-Tenn.), who on Tuesday called the idea a "silly effort."