Helen Thomas, the most senior correspondent covering the White House, is resigning from UPI after 57 years. UPI was just sold to News World Communications Inc., which was founded by the Rev. Sun Myung Moon, leader of the Unification Church. Like the consummate professional that she is, Thomas did not state any reasons for her departure, and wished the new management of UPI well. Her seniority entitles her to be first for questions at news conferences, so you may have often heard Presidents saying “Helen?” right after finishing statements to the press. She also closes conferences with a “Thank you, Mr. President.” She may be back on the White House beat if she chooses to find similar work, but I’m wondering who is next on the seniority list? And will that person take over voicing the now traditional thanks to the President?