By Hope Yen and Vivian Salama, The Associated Press WASHINGTON — Congressional Democrats on Sunday demanded to hear directly from top White House adviser Jared Kushner over allegations of proposed secret back-channel communications with Russia, saying the security clearance of President Donald Trump’s son-in-law may need to be revoked. Trump, having returned from a nine-day overseas trip, immediately railed against administration leaks in a flurry of tweets as “fabricated lies.” A key Trump campaign figure possibly seeking secret communications with a country that intelligence experts say intervened in the 2016 U.S.