Earlier this month, the union released results of a survey of its members showing that 98 percent of respondents said that workplace morale had fallen since Mr. Trump's second term began in January.
Most of the survey's more than 2,100 respondents said they were managing tighter budgets and greater workloads as the Trump administration cut spending, including a drastic reduction in U.S. foreign aid. Eighty-six percent said it had become more difficult to carry out U.S. foreign policy.
Only 1 percent reported an improvement.
Mr. Rubio presided over what he called a
"reorganization" of the department this year. The department announced about 1,300 layoffs in July, with 264 foreign service officers among them. In many cases, the diplomats when they were laid off were on a rotation in Washington before another posting abroad. They happened to be working in an office that was getting excised from the department.