What would be the potential political costs and benefits (nationally and internationally) of removing the import tariffs and subsidies (like on sugar or wheat?)
Here are some sites that I think will help you.
http://www.google.com/search?hl=en&ie=ISO-8859-1&q=removing+the+import+tariffs+and+subsidies+&btnG=Google+Search&aq=f&oq=