Senator Susan Collins of Maine, a Republican who backs abortion rights and was seen as a potential vote for the new bill, said she would not support it in its current form.
“I support codifying Roe,” Ms. Collins said. “Unfortunately, the bill that the House has drafted goes way beyond that.” She argued that it would “severely weaken” protections afforded to health care providers who refused to perform abortions on religious or moral grounds.
The Biden administration, pointing to the new Texas legislation, supports the bill.
“In the wake of Texas’ unprecedented attack, it has never been more important to codify this constitutional right and to strengthen health care access for all women, regardless of where they live,” White House officials said in a policy statement. “Our daughters and granddaughters deserve the same rights that their mothers and grandmothers fought for and won — and that a clear majority of the American people support.”
The Democrats’ strong push for the abortion rights measure reflects a changing political dynamic in the party. In the past, Democratic leaders were reluctant to emphasize measures such as the women’s health bill for fear of putting centrists in swing districts in a tough position and potentially alienating voters.
But as the ranks of centrist Democrats have shrunk, so have the numbers of lawmakers in the party who oppose abortion rights. Ms. Chu said she had found that her colleagues from competitive districts had been eager to sign onto the measure.
“This is a pro-choice nation,” Representative Jan Schakowsky, Democrat of Illinois and a chief backer of the legislation, told the House Rules Committee this week as she urged the panel to send the bill to the floor. “This is the majority view across most of the electorate.”
Multiple public opinion polls conducted since the Supreme Court agreed to take on the Mississippi case have reflected strong support for keeping abortion legal — nearly 60 percent in some surveys — though that support typically declines for abortions performed later in pregnancies.