It is believed this is the first time someone at a White House press briefing stood at the podium and spoke Spanish. That someone is Dan Restrepo, the White House’s senior adviser on Latin America. He addressed the media in Spanish and English during a press briefing on America’s loosening of travel and remittance restrictions on citizens with family in Cuba.
Here's the video; Restrepo enters about 1:45 into the clip.
(Thanks Tanya for the find.)