Five months after her visit, for the first time Mexico allowed imports of Washington state potatoes.
Congress passed a similar measure in 2000, a law that allowed imports from 26 countries.
That might make it more likely for laws to be passed to allow imports of agricultural products.
The Bush administration has said it has no plans to allow such imports.
He supports bills to allow imports from Canada and to increase access to generic drugs.
It would put money back into the economy, which could, for instance, increase purchasing power or allow imports of consumer goods.
Opinion polls show broad public support for allowing imports as a way to cut costs.
This would also allow imports of high-protein feed from America to be reduced.
At the same time, China began allowing imports of foreign cars, airplanes and consumer goods.
China is getting rid of export subsidies, and allowing imports to rise again.