“Obama owes the American people an explanation and apology. If he won’t do it, Bill ClintonBill ClintonTrump legal team spokesman resigns: report The Hill's 12:30 Report Lawmakers send McCain well wishes after cancer diagnosis 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 ReidConservative Senate candidate calls on GOP to end filibuster Ex-Reid aide: McConnell's 'original sin' was casting ObamaCare as 'partisan, socialist takeover' GOP faces growing demographic nightmare in West 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.