In the spring of 2020, Mark T. Esper, the defense secretary, was alarmed to learn of an idea under discussion at a top military command and at the Department of Homeland Security to send as many as 250,000 troops — more than half the active U.S. Army, and a sixth of all American forces — to the southern border in what would have been the largest use of the military inside the United States since the Civil War.
With the coronavirus pandemic raging, Stephen Miller, the architect of Mr. Trump’s immigration agenda, had urged the Homeland Security Department to develop a plan for the number of troops that would be needed to seal the entire 2,000-mile border with Mexico. It is not clear whether it was officials in homeland security or the Pentagon who concluded that a quarter of a million troops would be required.
The concept was relayed to officials at the Defense Department’s Northern Command, which is responsible for all military operations in the United States and on its borders, according to several former senior administration officials. Officials said the idea was never presented formally to Mr. Trump for approval, but it was discussed in meetings at the White House as they debated other options for closing the border to illegal immigration.
Mr. Esper declined to comment. But people familiar with his conversations, who would speak about them only on condition of anonymity, said he was enraged by Mr. Miller’s plan. In addition, homeland security officials had bypassed his office by taking the idea directly to military officials at Northern Command. Mr. Esper also believed that deploying so many troops to the border would undermine American military readiness around the world, officials said.
After a brief but contentious confrontation with Mr. Miller in the Oval Office, Mr. Esper ended consideration of the idea at the Pentagon.
Mr. Trump’s obsession with the southern border was already well known by that time. He had demanded a wall with flesh-piercing spikes, repeatedly mused about a moat filled with alligators, and asked about shooting migrants in the leg as they crossed the border. His aides considered a heat-ray that would make migrants’ skin feel hot.
Around the same time that officials considered the huge deployment to the American side of the border with Mexico, Mr. Trump also pressed his top aides to send forces into Mexico itself to hunt drug cartels, much like American commandos have tracked and killed terrorists in Afghanistan or Pakistan, the officials said.
Mr. Trump hesitated only after aides suggested that to most of the world, military raids inside Mexico could look like the United States was committing an act of war against one of its closest allies, which is also its biggest trading partner, the officials said.
They had to tell him that US military raids inside mexico might look like an act of war. Apparently, that didn’t occur to him. My only surprise is that he thought that might be a bad thing. The only reason he was against the “forever wars” is because he didn’t start them.
Trump was constantly trying to use the US MIlitary for his own political purposes. You can understand why members of the brass like General Milley were more than a little bit concerned that as Trump decompensated in the months after the election that he might precipitate a military crisis of one kind or another. He was itching to do it.