Plan for Haiti, Africa questioned.
Bill punts disputes on immigration, health care, budget to next year.
Smaller companies fare the best.
Senate Republicans passed the most sweeping rewrite of the nation's tax laws in more than three decades with a 51-48 vote.
U.S. stocks declined Tuesday as big technology companies and smaller firms gave up some of their recent gains.
Democrats say three provisions in the Republican $1.5 trillion tax bill violate Senate rules.