Washington — Senate Republicans were forced to call on Vice President Mike Pence to pass an anti-abortion measure on Thursday, marking the second time they’ve cast a help line to the new administration to move legislation.

Pence delivered the tiebreaking vote on a resolution reversing an Obama administration rule that prevented states from withholding family planning dollars from Planned Parenthood and other clinics that provide abortions. The vice president’s appearance in the Senate chamber was needed after two Republicans, Sens. Susan Collins, of Maine, and Lisa Murkowski, of Alaska, defected. No Democrats supported the resolution.

The measure, a priority for groups that oppose abortion, would give a thumbs-up to Tennessee and other conservative states to resume policies blocking Planned Parenthood clinics from getting federal funding through the Title X family-planning program. Those dollars can’t be used for abortions, but conservatives feel abortion providers shouldn’t receive any taxpayer funds.

While courts have not allowed states to withhold Medicaid money from Planned Parenthood, they’ve generally allowed states to redirect family planning dollars to other health providers.

“It’s a simple statement of where we used to be,” said Sen. James Lankford, R-Okla. “States could choose to have Planned Parenthood as part of their Title X funding states should not be compelled to.”

The women’s health organization dodged a bullet last week when a House bill repealing parts of the Affordable Care Act and blocking Planned Parenthood’s Medicaid funding was pulled amid a rebellion of conservative and moderate Republicans.

But it remains a key target for conservatives.

President Trump is expected to sign the Title X measure, which the House approved in February, though his administration has yet to release a statement of intent on it.

Sen. Patty Murray, D-Wash., said on Thursday she is apprehensive that Republicans will continue trying to strip streams of federal dollars from Planned Parenthood through other means this year, including by attaching riders to a spending bill. The money Planned Parenthood receives through Medicaid cannot be used for abortions.

“We should all be aware there is more headed our way,” Murray said on the Senate floor. “We are going to fight these efforts every step of the way.”

Conservative activists, who saw in the ACA repeal bill their first realistic chance to block Medicaid from reimbursing any services at Planned Parenthood clinics, are urging Congress to pass a defunding measure before it breaks for an April recess.

“You have a clear path to accomplish this goal,” several dozen groups, including Susan B. Anthony List, March for Life and Family Research Council, write in a letter being sent to members Friday. “There are no excuses for inaction.”

The Title X bill is a small but significant victory for abortion opponents. Thirteen states have blocked Planned Parenthood and other abortion providers from getting the family planning dollars, which can be used for services such as contraception and screening for sexually transmitted diseases.

But even this legislation was perilously close to defeat. West Virgina Sen. Joe Manchin III, the Democrat most likely to support it, instead sided with his party.

That meant Republicans had to bring in not only Pence, but also Sen. Johnny Isakson, R-Ga., who has been absent for several weeks recovering from two back surgeries.

In both a procedural vote in the morning as well as the final afternoon action, Isakson brought the measure to a 50-50 tie, and Pence cast his vote for its final passage.

Isakson, who used a walker to get onto the floor, exited in a wheelchair. He told reporters that he had always planned to ease back into his routine this week by flying up from Atlanta, where he is undergoing a 12-week rehabilitation, to cast some votes.

“We didn’t know at the time what it would be, but it turned out to be the vice president’s tiebreaker,” Isakson said.