OTAY MESA, Calif. — It's a quiet morning as the nation awaits newly sworn-in President Donald Trump to sign a slew of immigration-related executive orders, with border agents at the primary and secondary lines separating San Diego and Tijuana. Fence Patrol.

In his first speech as president, Trump said he "will declare a national emergency on our southern border. All illegal entry will stop immediately and we will begin deporting millions of criminal aliens back to their countries of origin." . Coming. "

Trump has vowed to reinstate "Remain in Mexico," a policy instituted by his first administration that requires anyone trying to enter the United States through Mexico to stay in the country.

He also pledged to "send troops to the southern border to repel a catastrophic invasion of our country."

It's unclear how the executive order will affect local operations as agents are still awaiting new guidance.

But before Trump took office, Mexican President Claudia Sheinbaum and members of her cabinet expressed disapproval of his plan to reinstate the "Remain in Mexico" policy and "unilaterally deport" Mexican nationals living in the United States.

"If they reinstate this rule, we would not agree with it. We have different priorities. We want it to be reformed," Mexican Foreign Relations Secretary Juan Ramon de la Fuente said at a news conference Monday morning. Adjustments." But ultimately, "our desire is to keep the same policy as we have now," he added.

De la Fuente described the "Remain in Mexico" policy as a "unilateral" policy, meaning it "does not require assistance from other countries" to implement.

De La Fuente said that while the policy does not obligate Mexico to process U.S. asylum requests, "we can make some agreements and find ways to work."

Sheinbaum said she and her administration "insist that it is possible to obtain asylum not only in person from the border, but also from far away in the south of the country or in other countries."

“That’s what we’re working towards,” she added.

Sheinbaum also insisted that the CBP One app, which allows immigrants seeking asylum to be pre-screened before arriving in the United States, should be preserved. "This will help reduce tensions on the northern border of Mexico and the southern border of the United States," she said.

However, the CBP One app's website said Monday afternoon that the app is "no longer available and existing appointments have been cancelled."

As Trump vows to begin the largest mass deportations in U.S. history, Mexican Interior Minister Rosa Isela Rodríguez Velazquez said that while the Mexican government does not agree with such actions , but “we will take them in and put them under Mexico’s welfare programs.”

These include medical care for them and their families, transportation back to their home countries and telephone communications, as well as any other services provided by the Mexican Social Security Institute, Rodriguez-Velazquez said.

In his inaugural address, Trump reiterated his intention to sign an executive order to rename the Gulf of Mexico the Gulf of America.

While it's unclear whether the U.S. president has the authority to rename international waters, Scheinbaum has previously hit back at Trump by suggesting the U.S. should be renamed "Mexican America."

Nicole Acevedo reported from New York and Jacob Soboroff reported from Otay Mesa.