The U.S. ambassador to Qatar, an Obama administration holdover whose family donated hundreds of thousands to the Obama campaign, signaled her distaste for working under President Donald Trump, raising questions about her commitment to the new administration. Dana Shell Smith, the U.S. ambassador for Qatar who was appointed by former President Barack Obama, took to Twitter last week to express her frustration at Trump's administration, which has been battling negative headlines over a plethora of foreign and domestic issues. "The problem is that the Obama administration left holdovers all over the government, so you get rid of one Obama loyalist...