US president Joe Biden has said that women travelling for abortions will be protected by the federal government.
Millions of women in the US lost the constitutional right to abortion in June, after the Supreme Court overturned its 50-year-old Roe v Wade decision.
The judgement has paved the way for individual states to ban the procedure.
They have become local battlegrounds in the fight to overturn or uphold abortion services.
Women in states where abortion is banned or restricted may be forced to cross state lines to parts of the country where the procedure remains legal.
Speaking at a virtual meeting with Democratic state governors, Mr Biden said he believed some US states would attempt to arrest women who crossed state lines for abortion access.
“I don’t think people believe that’s going to happen. But it’s going to happen,” he said.
The president added that the government would ensure access to pills that caused abortion in states where it was prohibited.
The overturning of Roe v Wade has sent shockwaves throughout the US.
It was the Supreme Court ruling that ensured that pregnant women were entitled to an abortion during the first three months of their pregnancy, while allowing for legal restrictions and bans in the second and third trimester.
Thirteen states have already severely curtailed or blocked abortion access since the court’s decision.