“Obama owes the American people an explanation and apology. If he won’t do it, Bill ClintonBill ClintonGOP rep: North Korea wants Iran-type nuclear deal Lawmakers, pick up the ball on health care and reform Medicaid The art of the small deal MORE should,” Barrasso said. “The American people deserve better than what they’ve gotten under this terrible healthcare law.”

Obama will spend the next few days defending his signature healthcare law as Republicans try to defund ObamaCare in a spending measure to keep the government funded through mid-December.

Barrasso said it’s time for Obama to admit his law is flawed and work with Republicans to repeal and replace the legislation.

“President Obama failed to keep his promises and he’s failed to convince Americans that this law is good for them,” Barrasso said. “It’s time for the president to admit that the healthcare law is terribly flawed.”

Senate Majority Leader Harry ReidHarry ReidThe Memo: Trump pulls off a stone-cold stunner The Memo: Ending DACA a risky move for Trump Manchin pressed from both sides in reelection fight MORE (D-Nev.) is expected to advance the House-spending bill while stripping out the language that defunds ObamaCare. It’s unclear how the House will proceed when the bill is returned to that chamber.

The government will shut down on Oct. 1 if Congress doesn't approve some form of government funding measure.