Marco Rubio, Secretary of Everything

Secretary of state.Acting administrator of the U.S.

Agency for International Development.Acting archivist for the National Archives and Records Administration.

And now interim national security adviser to President Trump.Like a Christmas tree bedecked with shiny ornaments of every shape and size, Marco Rubio, 53, has accumulated four titles starting with his confirmation as secretary of state on Jan.20, the same day that Mr.

Trump took his oath of office.It very well could be a record in the modern history of the U.S.government.

And it adds to the immigrant success story that is core to the narrative of Mr.Rubio, a former senator from Florida whose father worked as a bartender and mother toiled as a housekeeper after they left Cuba for the United States.But the proliferation of titles raises questions about whether Mr.

Rubio can play any substantial role in the administration if he is juggling all these positions, especially under a president who eschews the traditional workings of government and who has appointed a businessman friend, Steve Witkoff, as a special envoy handling the most sensitive diplomacy.Mr.Trump announced Mr.

Rubio’s newest position in a social media post on Thursday afternoon, a surprise twist in the first big personnel shake-up of this administration.The president had just ousted Michael Waltz from the White House national security adviser job as well as Mr.

Waltz’s deputy, Alex Wong.In the same post, Mr.

Trump said Mr.Waltz would now be his nominee to be ambassador to the United Nations.Mr.

Rubio’s appointment to yet another job — as if he were cloned in a B-grade sci-fi movie — was so sudden that Tammy Bruce, the State Department spokeswoman, learned about it when a reporter read Mr.Trump’s social media post to her during a regular televised news conference.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access.

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