Mexico has launched a massive deployment of 10,000 troops to cities and towns on the border with the United States. Videos and photos posted on social media by Mexico's Secretariat of National Defense (SEDENA) showed military and National Guard troops lined up boarding transport planes and rows of army trucks rolling out in the predawn darkness Feb. 4 from bases in Mexico City, Tlaxcala and other cities. Large contingents were also mobilized to Mexico's southern border in the Yucatan. The response—dubbed "Operativo Frontera Norte"—is part of an agreement reached the previous day between US President Donald Trump and Mexican President Claudia Sheinbaum postponing trade tariff threats for a month. (El Paso Times, Peninsula360)

Five Quaker groups filed a lawsuit Jan. 26 to stop immigration agents from conducting raids on houses of worship. The complaint alleges that the new Department of Homeland Security (DHS) policy that allows Immigration & Customs Enforcement (ICE) officers to conduct searches and arrests at schools and religious institutions violates the First Amendment to the US Constitution.

During his first days back in office, Donald Trump rapidly started implementing his hardline migration agenda, including by declaring a state of emergency at the US southern border. The move allows his administration to access billions of dollars to expand the building of a border wall and to deploy the military and national guard to the area. Around 1,500 active duty soldiers are already being deployed. Trump also reinstated the controversial "Remain in Mexico" program from his first administration. This policy, which requires people to wait for asylum appointments in Mexico, helped to create a now-perennial humanitarian crisis in northern Mexico. The Trump administration has also shut down CBP One—a cell phone app for scheduling asylum appointments—leaving thousands of people stranded in Mexico, and suspended the US refugee resettlement program, as well as cancelling travel plans for refugees who had already been approved to enter the country. Trump's promised mass deportation of millions of undocumented people has yet to get underway, but his administration has begun laying the groundwork for expanded immigration raids—potentially including on schools, churches, and hospitals—and has threatened to prosecute any local officials who don't comply.

President Joe Biden signed an executive order June 4 barring asylum claims from anyone who crosses the US-Mexico border illegally. The ban will be suspended if border agents observe a seven-day average of fewer than 1,500 "encounters," which include apprehensions of undocumented migrants within 100 miles of the border or entry refusals at US-Mexico land border crossings. However, if border authorities record a seven-day average of 2,500 or more encounters, the restriction will be reinstated.

Two migrant children and their mother drowned Jan. 12 while trying to cross from Mexico into the United States, after Texas authorities prevented  US Border Patrol agents from reaching the victims to render life-saving aid, charged US Rep. Henry Cuellar, who represents a district on the border. The US Department of Homeland Security said the three migrants drowned near Shelby Park in the border town of Eagle Pass after Texas Guardsmen "physically barred" Border Patrol agents from entering the area. Mexican officials recovered the bodies the next morning on their side of the Rio Grande, in Piedras Negras.

US District Judge Alia Moses of the Western District of Texas on Oct. 30 granted a temporary restraining order enjoining the federal government from interfering with fencing erected by Texas state authorities at the US-Mexico border. As part of Operation Lone Star, the Texas Military Department has deployed concertina wire fencing to deter illegal crossings at the border. The suit, brought by Texas Attorney General Ken Paxton, alleged that since Sept. 20, federal agents have implemented a policy of destroying the state-erected fencing. The complaint links to several videos posted on X, which purport to show federal agents cutting or lifting the fencing, and providing support to those attempting to cross after swimming the Rio Grande. The complaint alleged that from Sept. 21 to Sept. 28, federal agents allowed at least 400 migrants through.

The US government announced Oct. 16 that it will settle a 2018 class-action lawsuit that challenged the Trump administration's family separation practice at the US-Mexico border. The proposed settlement would create a process to reunify families who were separated. Additionally, the government is to provide health services and housing support for affected families, and arrange legal services through the Executive Office for Immigration Review. Attorney General Merrick Garland stated, "This agreement will facilitate the reunification of separated families and provide them with critical services to aid in their recovery."

The Biden administration announced Oct. 4 that it has waived 26 federal laws in an area of South Texas by executive order to allow border wall construction—a tactic often used during the Trump presidency. The Department of Homeland Security posted the waiver on the Federal Registry, affecting a "high illegal entry" sector in Starr County, Tex. According to government data, about 245,000 illegal entries have been recorded in this sector during the current fiscal year. The Clean Air Act, Safe Drinking Water Act and Endangered Species Act are among the laws suspended by the order.