Ranking Democrats call for nationwide rallies against GOP medicare cuts

Three of the most powerful congressional Democrats are taking a public stand against any possible Republican plans to cut certain social programs.

Democrats in Congress got a letter Wednesday from Sen. Bernie Sanders, Sen. Chuck Schumer and Rep. Nancy Pelosi.

More from Newsy: Bernie Sanders Doesn't Have High Hopes For Some Of Trump's Cabinet

The letter asks Democrats to help organize nationwide rallies on Jan. 15 to protest possible Medicare spending cuts they say will "severely undermine the health care needs of the American people."

RELATED: Possible Democratic candidates in 2020

The three hope the rallies will hold Trump to his campaign promises not to make changes to Social Security, Medicare or Medicaid funding.

"Every Republican wants to do a big number on Social Security, they want to do it on Medicare, they want to do it on Medicaid, and we can't do that," Trump said at the New Hampshire Republican Leadership Summit.

But they're worried congressional Republicans will try to use a budget bill to make major cuts to the program — something they've attempted before.