In the Past Twenty Years or So,all Major U

In the past twenty years or so,all major U.S.trade legislation has typically included all of the following except

A) negotiating authority for the President to try to achieve new trade agreements.
B) new U.S. trade barriers in the form of dumping or countervailing duty laws.
C) new U.S. trade barriers in the form of uniformly higher tariffs on all goods.
D) expanded laws calling on the President and USTR to investigate and challenge unfair trading practices of foreign countries.