Not when legislation is in an omnibus bill; that requires that one must expire prior to another being in place.
Gonna happen. Sure. About 10 days after the Stanley Cup finals are played in hell.
You cannot repeal a constitutional amendment by legislative vote. As long as the government has the power to level an income tax through the 16th amendment, there will be income taxes. The ONLY way this will ever work if ro the 16th Amendment to be repealed. That can ONLY be done through another amendment to the constitution.