Mexicans fear deportee and refugee camps could be popping up along their northern border under the Trump administration's plan to start deporting to Mexico all Latin Americans and others who entered the US illegally through this country. Previous US policy called for only Mexican citizens to be sent to Mexico. Migrants known as "OTMs" — Other Than Mexicans — got flown back to their homelands. Now, under a sweeping rewrite of enforcement policies announced on Tuesday by the US Department of Homeland Security, migrants might be dumped over the border into a violence-plagued land where they have no ties while their asylum claims or deportation proceedings are heard in the United States. US officials didn't say what Mexico would be expected to do with them. The only consensus so far in Mexico about the new policies of President Donald Trump is that the country isn't remotely prepared. "Not in any way, shape or form," said the Rev. Patrick Murphy, a priest who runs the Casa del Migrante shelter in the border city of Tijuana, which currently houses about 55 Haitian immigrants. They were part of wave of thousands who swarmed to the border in the closing months of the Obama administration in hopes of getting asylum in the US. Tijuana was overwhelmed, and while the government did little, a string of private Christian groups pitched in to open shelters with improvised bedding, tents and sanitary facilities. Donated food kept the Haitians going. Mexicans quake at the thought of handling not thousands, but hundreds of thousands of foreigners in a border region already struggling with drug gangs and violence. "Just look at the case of the Haitians in Tijuana, what were they, seven or eight thousand? And the situation was just out of control," said Alejandro Hope, a Mexico City-based security analyst. "Now imagine a situation 10 or 15 times that size. There aren't enough resources to maintain them." It's unclear whether the United States has the authority to force Mexico to accept third-country nationals. The DHS memo calls for the department to provide an account of US aid to Mexico, a possible signal that Trump plans to use that funding to get Mexico to accept the foreigners. "I hope Mexico has the courage to say no to this," Murphy said. Victor Clark, director of Tijuana's Binational Center for Human Rights, said Mexico can simply refuse to accept non-Mexican deportees. "They come through one by one, and when the Mexican immigration agent sees a person who isn't Mexican, he tells the ICE agent, ‘I can't accept this person, he's not Mexican,' and they return him to the United States." Hope said the new US policy could create an "explosive situation," noting that some anti-foreigner sentiment already exists in Mexico's northern border region and that Central American migrants have been recruited, sometimes by force, into drug gangs like the Zetas and the Gulf cartel. The United States could pay to build the needed facilities. There would be precedents for such a deal. Turkey has agreed to house Syrian refugees headed for the European Union in exchange for at least $3 billion in aid. — AP