Republicans officially confirmed their plans to take hundreds of millions of dollars in federal funding away from Planned Parenthood on Wednesday, January 5.

Speaker of the House Paul Ryan said in a press conference that a forthcoming bill to repeal the Affordable Care Act would also include a provision that strips federal funding from Planned Parenthood.

Ryan remained tight-lipped on the details, but said simply, "the Planned Parenthood legislation would be in our bill." However, a previous bill offers clues to what it could entail.

A 2015 proposal to defund Obamacare would have denied Planned Parenthood all Medicaid funding for non-abortion services, and removed other sources of government funding for contraceptive services.

The losses would amount to $400 million in Medicaid funding — the majority of which goes to STI testing, contraception, and cancer screenings, according to Planned Parenthood. The Congressional Budget Office estimated that roughly 400,000 women would lose access to these services.

"Defunding Planned Parenthood is dangerous to people's health, it's unpopular, and it would leave people across the country without care," Planned Parenthood president Cecile Richards said in a statement. "They cannot afford to have basic reproductive health care attacked.”

Last year's bill failed to pass because of president Obama's veto. But with Donald Trump in power, and a Republican majority in the House and Senate, the bill's prospects look much better.

Trump said last year that he would support defunding Planned Parenthood as long as they continue to provide abortions, though he failed to mention that the Hyde Amendment currently prohibits federal funding from being spent on abortions. He has also repeatedly confirmed his pro-life stance and belief in the rights of unborn fetuses.

"We're not going to allow, and we're not going to fund, as long as you have the abortion going on at Planned Parenthood,” Trump said during a presidential debate

Republican senator Susan Collins of Maine, however, spoke out against the bill on Thursday. She is one of three GOP senators who tried to remove the Planned Parenthood provision from the 2015 Obamacare reversal bill.

"Obviously I'm not happy to hear that the speaker wants to include defunding of Planned Parenthood, an extremely controversial issue, in the package," Collins told reporters. Republican senator Lisa Murkowski also expressed concern.

House and Senate democrats do not have the numbers to stop the bill from passing, but many released impassioned statements nonetheless.

House minority leader Nancy Pelosi told CNN:

I just would like to speak individually to women across America: This is about respect for you, for your judgment about your personal decisions in terms of your reproductive needs, the size and timing of your family or the rest, not to be determined by the insurance company or by the Republican ideological right-wing caucus in the House of Representatives.

If Pelosi's call rings true to you, you can call speaker Ryan at (202) 225-3031 to express your feelings on the bill.