NAFTA 2.0 poses major threats to U.S. workers

The Mexican and Canadian governments are pushing the White House to step up the North American Free Trade Agreement’s renegotiation pace and to conclude talks in May. Dubbed NAFTA 2.0, President Trump must proceed cautiously lest he open up the U.S. labor market to a new flood of employment-authorized visa holders.

NAFTA, which went into force on January 1, 1994, created the Treaty NAFTA (TN) visa...