The US state of Oregon will no longer limit medically assisted suicide to the state’s residents after a lawsuit successfully challenged the restriction as unconstitutional.

In a settlement on Monday, the Oregon Health Authority agreed to stop enforcing the residency requirement and to ask the Legislature to remove it from the law.

Laura Echevarria, a spokeswoman for National Right to Life, which opposes such laws, warned that, without a residency requirement, Oregon risked becoming the nation’s “assisted-suicide tourism capital.”

Enacted in 1997, Oregon’s first-in-the-nation law allows terminally ill people deemed to have less than six months to live to end their lives by voluntarily taking lethal medications prescribed by a physician for that purpose.

Since the law took effect, 2,159 people have used it to end their lives, according to data published last month by the Oregon Health Authority.

National Right to Life is concerned that people might be able to travel to Oregon without having much of a relationship with a doctor in the state, thus chipping away at protections limiting the use of the law, Echevarria said.