A September 2009 report by the Chamber of Commerce estimated if the U.S. did not implement the NAFTA trucking provisions, "the impact on U.S. employment ... coupled with Mexican retaliation equals 25,600 jobs. The report also estimated that the suspension of the program has caused U.S. exports to decline by $2.6 billion.
This is the tariff retaliation they are talking about. Real numbers. Real people. Right now. Sorry you didn't notice it.
As for the Chamber of Commerce they want the full 48 state NAFTA trucking program, so I put no reliance on any of their statistics. And they ignore the costs of unsafe Mexican trucks in dead, injured, and property damage, which tab will have to be picked up by Americans, because the Mexicans sure won't. But maybe that doesn't bother you.
The Chamber of Commerce does not have the American people's back on this issue. Believe them at your peril.