Obama meets with tech execs to talk NSA, health care --- President Obama met privately with several tech executives Tuesday to discuss the administration's efforts to address problems with the federal online health care exchange as well as the fallout that national security leaks have had on their companies, according to the White House. -- Among those who were invited to the White House meeting were Apple's CEO Tim Cook, Yahoo! CEO Marissa Mayer, Facebook Chief Operating Officer Sheryl Sandberg and Google's executive chairman, Eric Schmidt. -- The meeting came as a federal judge ruled Monday that the National Security Agency's controversial surveillance program that collects millions of Americans' telephone records may be unconstitutional. -- The tech executives wrote an open letter to Obama last week in which they plainly stated their call to curb surveillance. -- "We appreciated the opportunity to share directly with the President our principles on government surveillance that we released last week and we urge him to move aggressively on reform," the executives said in a joint statement. - More, USATODAY, at: http://www.usatoday.com/story/news/politics/2013/12/16/obama-google-yahoo-facebook-nsa/4044471/