It looks like they are making the problem worse:
Candidates rebuked for attacks on Nafta
Mexico and Canada on Wednesday voiced concern about calls by Barack Obama and Hillary Clinton to renegotiate the North American Free Trade Agreement, as the Democratic presidential hopefuls compete to adopt the most sceptical stance towards free trade ahead of next week’s Ohio primary election.
In a televised debate on Tuesday night, Mr Obama and Mrs Clinton both threatened to pull out of Nafta if elected president unless Canada and Mexico agreed to strengthen labour and environmental standards.
Arturo Sarukhan, Mexico’s ambassador to the US, told the Financial Times that the US, Canada and Mexico had all benefited from Nafta and warned against reopening negotiations.
“Mexico does not support reopening Nafta,” he said. “It would be like throwing a monkey wrench into the engine of North American competitiveness.”
Mexican diplomats believe a renegotiation could resurrect the commercial disputes and barriers to trade that the agreement itself was designed to overcome.
Jim Flaherty, Canada’s finance minister, also expressed “concern” about the remarks by the Democratic candidates.
“Nafta is a tremendous benefit to Americans and perhaps the [candidates] have not had the opportunity to familiarise themselves with the benefit to Americans and the American economy of Nafta,” he said.
The full article from the Financial Times can be found here.
Tufts professor Daniel Drezner comments: “I’ve said it before and I will say it again: Democrats cannot simultaneously talk about improving America’s standing abroad while acting like a belligerent unilateralist when it comes to trade policy.”
Update: The economist has more.