Brazil's VP Alckmin Says U.S. Tariffs Are Unfair And Unreasonable; U.S. Have Trade Surplus With Brazil; Medium Tariffs To U.S. Products Are Equal To 3.1%, 75% Of What They Sell Face Zero Tariffs In Brazil; Points Raised By U.S. Under Section 301 Investigations Have False Bases; Brazil Defends Free Trade, WTO Rules, Multilateral Trading System; Govt To Decide At The Appropriate Time How To Use Reciprocity Law Approved By Congress