He’s being undermined by fellow Republicans, and that’s before he shows up to lead a workforce Trump distrusts.

Florida Senator Marco Rubio is unlikely to last longer than a year or two as Donald Trump’s top diplomat, at least according to about a dozen current and former U.S. foreign officials interviewed by Politico’s Nahal Toosi.

Rubio is seen as a steady foreign policy hand who has the confidence of Trump and Senate colleagues from both parties.

Rubio is expected to face questions about the incoming administration’s approach to an historic wave of migration throughout the hemisphere that has dominated U.S. relations with other countries.

As America’s top diplomat, Rubio will not need to be briefed on the state of play. His views were forged in Miami, which has its own foreign policy and serves as the de facto capital of Latin America. It is a Latino-dominated city of exiles, where political shake ups in Latin America can lead to the eruption of local protests.

Senator Marco Rubio is Donald Trump’s nominee to be secretary of state, but in the weeks running up to Inauguration Day, the president-elect’s special envoys have been getting most of the attention.

Senate Democratic Whip Dick Durbin (Ill.) on Monday announced that he will vote for Sen. Marco Rubio (R-Fla.) to become the next secretary of State, a sign that Rubio is on a path to be confirmed on President-elect Trump’s first day of office with overwhelming support.