The Latest: US begins tough new policy on asylum seekers

FILE - In this April 29, 2019 file photo, Cuban migrants are escorted by Mexican immigration officials in Ciudad Juarez, Mexico, as they cross the Pas

FILE - In this April 29, 2019 file photo, Cuban migrants are escorted by Mexican immigration officials in Ciudad Juarez, Mexico, as they cross the Pas

FILE - In this Aug. 1, 2019 file photo, migrants line up in Matamoros, Mexico, for a meal donated by volunteers from the U.S., at the foot of the Puer

FILE - In this Aug. 1, 2019 file photo, migrants line up in Matamoros, Mexico, for a meal donated by volunteers from the U.S., at the foot of the Puer

Ngoh Elliot Takere gives an interview in Tijuana, Mexico, where he has been waiting for two months to apply for asylum in the U.S., Thursday, Sept. 12

Ngoh Elliot Takere gives an interview in Tijuana, Mexico, where he has been waiting for two months to apply for asylum in the U.S., Thursday, Sept. 12

Honduran migrant Dunea Romero, 31, helps helps make Honduran style nachos at the migrant shelter where she is living in Tijuana, Mexico, as she waits

Honduran migrant Dunea Romero, 31, helps helps make Honduran style nachos at the migrant shelter where she is living in Tijuana, Mexico, as she waits

FILE - In this Aug. 30, 2019 file photo, asylum seekers walk by an encampment near the Gateway International Bridge in Matamoros, Mexico. A federal ap

FILE - In this Aug. 30, 2019 file photo, asylum seekers walk by an encampment near the Gateway International Bridge in Matamoros, Mexico. A federal ap

WASHINGTON (AP) — The Latest on U.S. denial of asylum claims from Central Americans (all times local):

4:10 p.m.

Trump administration officials say they have started to implement a new policy that effectively denies asylum to most migrants at the Southern border, in the wake of a Supreme Court ruling on the policy.

A spokeswoman for the Homeland Security agency that conducts asylum interviews says the policy will be retroactive to July 16, when the initial rule was announced.

The new rules deny asylum to anyone coming to the U.S.-Mexico border who has not already sought the protection first in another country.

Advocates had sued and the policy was on hold, but the Supreme Court ruled Wednesday it could be implemented while the challenge is heard.

Most asylum seekers pass an initial screening called a "credible fear" interview. Under the new policy, they would fail the test unless they sought asylum in at least one country they traveled through and were denied

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3 p.m.

The U.S. Supreme Court's clearing of the way for the Trump administration to deny nearly all asylum claims from Central Americans is being denounced by immigration advocates as a "death sentence" for migrants trying to escape poverty and violence.

The new policy would deny asylum to anyone who passes through another country on the way to the US without first seeking asylum there.

Migrants who make their way to the U.S. overland from places like Honduras, Guatemala and El Salvador would be largely ineligible, along with asylum seekers from Africa, Asia and South America who try to get in by way of the U.S.-Mexican border.