The White House unilaterally reinterpreted the agreement in the spring of 2017 to exempt people convicted of crimes from its protections, allowing the administration to send back a small number of pre-1995 Vietnamese immigrants, a policy it retreated from this past August. Last week, however, James Thrower, a spokesperson for the U.S. embassy in Hanoi, said the American government was again reversing course.

Washington now believes that the 2008 agreement fails to protect pre-1995 Vietnamese immigrants from deportation, Thrower told The Atlantic. This would apply to such migrants who are either undocumented or have committed crimes, and this interpretation would not apply to those who have become American citizens.

“The United States and Vietnam signed a bilateral agreement on removals in 2008 that establishes procedures for deporting Vietnamese citizens who arrived in the United States after July 12, 1995, and are subject to final orders of removal,” Thrower said. “While the procedures associated with this specific agreement do not apply to Vietnamese citizens who arrived in the United States before July 12, 1995, it does not explicitly preclude the removal of pre-1995 cases.”

The about-turn came as a State Department spokesperson confirmed that the Department of Homeland Security had met with representatives of the Vietnamese embassy in Washington, D.C., but declined to provide details of when the talks took place or what was discussed.

Katie Waldman, a spokeswoman for DHS said: “We have 5,000 convicted criminal aliens from Vietnam with final orders of removal—these are non-citizens who during previous administrations were arrested, convicted, and ultimately ordered removed by a federal immigration judge. It’s a priority of this administration to remove criminal aliens to their home country.”

Spokespeople for the Vietnamese embassy did not immediately respond to requests for comment.

But the Southeast Asia Resource Action Center, a Washington, D.C., advocacy group, said in a statement that the purpose of the meeting was to change the 2008 agreement. That deal had initially been set to last for five years, and was to be automatically extended every three years unless either party opted out. Under those rules, it was set to renew next month. Since 1998, final removal orders have been issued for more than 9,000 Vietnamese nationals.

When it first decided to reinterpret the 2008 deal, Donald Trump’s administration argued that only pre-1995 arrivals with criminal convictions were exempt from the agreement’s protection and eligible for deportation. Vietnam initially conceded and accepted some of those immigrants before stiffening its resistance; about a dozen Vietnamese immigrants ended up being deported from the United States. The August decision to change course, reported to a California court in October, appeared to put such moves at least temporarily on ice, but the latest shift leaves the fate of a larger number of Vietnamese immigrants in doubt. Now all pre-1995 arrivals are exempt from the 2008 agreement’s protection.