LAREDO, TEXAS, AND NUEVO LAREDO, MEXICO -

Like border cities everywhere, Nuevo Laredo is a portal. People and merchandise cross the five road and rail bridges between the U.S. and Mexico every day, in both directions, for work, school, business meetings, shopping, family visits, doctor appointments - the quotidian building blocks of life along the Rio Grande.

How US Government's 'Remain in Mexico' Plan Unfurled Into Confusion

Pay 25 cents and you can walk right across Puente #1, as it’s known colloquially, in a few minutes if you're in a rush and there’s no line at the immigration agent desks.

How US Government's 'Remain in Mexico' Plan Unfurled Into Confusion

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How US Government's 'Remain in Mexico' Plan Unfurled Into Confusion

Formally the Gateway to the Americas International Bridge, it links Laredo’s historic city center neighborhood of San Agustin, to the commercial strip of shops, pharmacies and low-key lunchtime restaurants on Nuevo Laredo’s Avenida Guerrero.

It’s at the end of this bridge, when entering Mexico from the U.S., in the parking lot built for buses and trucks at the Mexican immigration agency’s customs office, where U.S. Customs and Border Protection officials have dropped off migrants and asylum-seekers sent back to Mexico under the Trump administration's Migration Protection Protocols (MPP) policy to wait for their immigration court dates.

“In Nuevo Laredo, we're used to seeing a lot of migrants (traveling through), historically," said Raul Cárdenas Thomae, secretary of the Nuevo Laredo city council. "But in the last few months, the number of people crossing into the U.S. has definitely increased."

At first, asylum-seekers would register with Mexico's National Institute of Migration, which in turn would share lists of the asylum-seekers with the U.S. government, Cárdenas Thomae said. The list would allow the asylum-seekers to schedule an initial hearing with a U.S. immigration judge.

Beginning on July 9, however, Nuevo Laredo began receiving people from the other direction under the Trump administration's new policy. Since then, more than 3,000 asylum-seekers who had crossed into the U.S. and are awaiting immigration court dates have been returned to Mexico under the MPP policy.

Moreover, migrants aren't the only -- or even the main -- issue for local government for this city of about 400,000.

Nuevo Laredo maintains a prickly balance among massive amounts of transnational business, politics, migration and organized crime, and it’s long been a base for the Los Zetas cartel, whose activities are deeply entrenched in the city’s fabric.

Nuevo Laredo Mayor Enrique Rivas Cuéllar said every city has its dangers, its risks. But the city is not the one that is pushing migrants to leave, he insists.

“We obviously can't force anyone not to be in the city of Nuevo Laredo, but what we can be strict about is that the laws are followed; that there is an order that doesn't disrupt the rights of others,” he told VOA.

Officials didn't know how many people to expect. At one point, local officials understood they might receive as many as 15,000 returnees, Cardenas Thomae said. Moreover, they don’t know how long people will stay -- or even if they will stay.

The Mexican government at first provided buses from Nuevo Laredo to Monterrey, a 270-kilometer (168-mile) journey that takes about three hours to drive. The buses were an option for migrants; no one was forced on board.

Beginning earlier this month, though, the buses that showed up at the bridge drop-off site were bound for Chiapas, the Mexican state bordering Guatemala, which in turn, borders Honduras and El Salvador.

The Homeland Security Department and U.S. Customs and Border Protection did not respond to multiple VOA requests for comment on Mexico’s busing plan and concerns over how people would be able to return for their U.S. court dates.

Calling the busing plan “voluntary,” said Maureen Meyer, director of Mexico programs at the Washington Office on Latin America, a Washington-based human rights organization, “seems hard to justify when the people aren't even very clear on what they're going into.”

Meyer traveled to Chiapas this month to see the buses from Nuevo Laredo arrive, after a more than 30-hour trip. Mexican immigration agents at the border with Guatemala seemed confused about what they should advise the busloads of people, she told VOA.

The arrival also raised issues for the migrants themselves, each theoretically with a U.S. court date in the coming months. Being closer to home could mean a place to shower and regroup, or pick up more paperwork for their cases. However, they often don’t understand that even a brief return home could weaken their asylum cases, Meyer said.