White House press secretary Jen Psaki used the phrase "crisis on the border" during the briefing on Thursday -- a notable choice of words after the administration has avoided describing the situation that way. She later seemed to walk it back when reporters asked if her phrasing was indicative of a change in how the White House viewed the situation. She reverted back to using the phrase "challenges at the border" and maintained there is no change in administration messaging. During the White House press briefing Thursday, Psaki was asked about lending doses of AstraZeneca COVID-19 vaccine to Mexico and...