WASHINGTON — President Donald Trump, unable to get the US Congress or Mexico to fully fund his border wall, will post National Guard troops along the Mexican frontier, officials said on Wednesday, in a move that was likely to escalate tensions with a key US ally.
The Trump administration was working with the governors of the four southwestern US states along the border to deploy the Guard, said Homeland Security Secretary Kirstjen Nielsen, adding that the troops would not be involved in law enforcement.
In a supporting role, possibly for aerial reconnaissance, the Guard will help US Customs and Border Protection personnel with stopping illegal immigrants from entering the country, Ms. Nielsen said at a White House briefing with reporters.
In a memorandum laying out the new initiative, Mr. Trump directed Defense Secretary James Mattis to request the use of National Guard personnel to help the Department of Homeland Security in securing the southern border.
He ordered Mr. Mattis, Ms. Nielsen and Attorney General Jeff Sessions to submit a report within 30 days detailing an action plan and recommendations for any other executive authorities to be invoked to protect the border.
The administration’s move drew criticism from Democrats. Senator Michael Bennet of Colorado said Mr. Trump has failed to engage with lawmakers on bipartisan immigration reform that would satisfy both parties’ agendas on the volatile issue.
“Unfortunately, the president failed to lead, and rather than find real solutions on immigration, he continues to stoke fear,” Mr. Bennet said in a statement.
The Mexican government has told the United States that “if the announced deployment of the National Guard turned into a militarization of the border, that would gravely damage the bilateral relationship,” Mexico’s Foreign Ministry said.
It said Ms. Nielsen discussed the planned National Guard deployment with Mexican Foreign Minister Luis Videgaray on Wednesday and told him the troops will not carry arms.
In keeping with a theme he often invoked as a candidate in 2016 and has continually returned to since taking office, Republican Mr. Trump has sharpened his anti-immigrant rhetoric, warning that illegal immigrants threaten US safety and jobs.
His plan to deploy troops comes after his failure so far to persuade either the Mexican government or the US Congress to fully fund a wall he wants to build along the border.
At the same time, the Republican-controlled Congress has failed to meaningfully overhaul US immigration law, despite demands from Mr. Trump for a deal. With campaigning by lawmakers for November’s midterm congressional elections getting under way, little legislative action was expected in months ahead.
The National Guard is a reserve wing of the US armed forces that is partially under the authority of governors.
Mr. Trump’s plans were hailed as welcome and needed by the Republican governors of Arizona and Texas.
The California National Guard will promptly review Mr. Trump’s request “to determine how best we can assist our federal partners,” said a spokesman for the state’s unit in a statement. He added he was speaking for Governor Jerry Brown, a Democrat.
Mr. Trump last month signed a federal spending bill that contained $1.6 billion to pay for six months of work on his wall. He had asked for $25 billion for it.
Ms. Nielsen told reporters the administration was looking into possibly constructing some wall on border land owned by the US military.
Many National Guard personnel are federally funded and can be put under the direction of Washington when they are carrying out federal missions. Thousands of US National Guard now serve on federal missions, including in Afghanistan.
Ms. Nielsen did not give details on the number of the troops to be deployed to the border or the cost of the operation. She said the administration had drafted legislation and would be asking Congress to provide the legal authority and resources to address “this crisis at our borders.” She said the Guard could conduct aerial surveillance along the border.
Ms. Nielsen said that despite steps taken by the administration, drug smuggling, illegal immigration and dangerous gang activity across the border were at unacceptable levels.
“Until we can have a wall and proper security we’re going to be guarding our border with the military,” Mr. Trump told reporters at the White House on Tuesday, lamenting what he called “horrible” US laws that left the border poorly protected.
On Wednesday, he said in a tweet: “Our Border Laws are very weak while those of Mexico & Canada are very strong. Congress must change these Obama era, and other, laws NOW!” — Reuters