WASHINGTON — On Sunday, Senate Majority Leader John Thune, R-S.D., discussed an off-ramp with President Donald Trump to reopen TSA and end the long lines and delays at airports. It would fund all of the Department of Homeland Security except for ICE, which Democrats have refused to support without new limitations on immigration enforcement operations, two sources with knowledge of the conversation told NBC News. White House aides initially pitched the idea to Trump and, after that briefing, Thune spoke to the president, the two sources said. Thune discussed the idea with Republicans on Capitol Hill, one of the sources said. The second source said it's seen by numerous Republicans as a viable path to break the logjam. ICE would be funded separately by Republicans in a party-line “reconciliation” bill that can pass without the need for any Democratic support later in the year.…