http://www.rushmypassport.com/blog/2009/06/michigan-lawmaker-presses-for-review-of-new-laws-requiring-passports-for-travelers/ US Representative Gary Peters of Michigan has managed to get an amendment through the House of Representatives requiring the government to review the economic impact of the final phase of the Western Hemisphere Travel Initiative. The new rules, which became law on June 1st, 2009, require Americans to use passports or another special government-approved document to travel to Canada, Mexico and the Caribbean by land and sea. passports Wed, 08 Feb 2012 22:52:00 +0000 hourly 1