Former New Mexico Gov. Bill Richardson (D), a global crisis negotiator who served as U.S. permanent representative to the U.N. under Clinton, warned that military action in Mexico would both backfire and fail to solve the underlying issues.

“It shows the nativist shift of the Republican Party from internationalism to irresponsible diplomacy. It would be a disaster if there were any military action against Mexico — a foreign policy disaster for the United States,” he said.