A spokeswoman for Sen. Bernie Sanders Bernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.) on Monday pushed back against criticism of the presidential candidate's Medicare for All proposal, saying people are “tired” of the “uncertainty” of the nation's current health care system.

“We are the only wealthy country in the world who is still stuck with this employer-based model, which basically means your ability to provide health care for yourself and family to take care of your loved ones, is completely contingent on whether your employer is going to have layoffs,” Briahna Joy Gray, a national press secretary for Sanders’s presidential campaign, told Hill.TV’s Krystal Ball.

Gray estimated that the average American worker has held 12 different jobs by the time they turn 50.

“That’s 12 different points at which your insurance, your ability to have your medical needs met is potentially impacted,” she said. "Americans are tired of dealing with that kind of uncertainty."

In response to a question about Sanders's Medicare for All proposal, which would replace private health coverage with a government-run system, Gray said, “I don’t think very many Americans have very strong, warm, fuzzy feelings about their insurance companies — I think Americans have warm fuzzy feelings about their medical professionals."

Her comments come amid President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's renewed attacks on ObamaCare. The Justice Department announced last week that it was siding with a district court ruling that found the 2010 Affordable Care Act unconstitutional. The case is awaiting action in a federal appeals court.

"The cost of ObamaCare is far too high for our great citizens. The deductibles, in many cases way over $7000, make it almost worthless or unusable. Good things are going to happen!," Trump tweeted last week following the Justice Department's announcement.

Gray told Hill.TV that while striking down ObamaCare would impact millions of Americans, there is a more "substantial" fight at play.

"There's another more substantial fight here, which is that we need a program in place that isn't so vulnerable, that has buy-in from all Americans," she said, pointing to Medicare for All.

Sanders has continued to promote Medicare for All, even with ObamaCare coming under assault.

“Three years ago, we were told that Medicare for all was ‘too radical.’ Well, three years have come and gone, and a majority of Democratic voters in swing districts across the nation support Medicare for all,” he tweeted Thursday, in reference to a recent poll by progressive think tank Data for Progress.

The poll showed that half of Democratic voters indicated support for Medicare for All, compared with 25 percent who indicated they were opposed to the proposal.

—Tess Bonn