A Homeland Security department IG report looks at enforcement of a new passport law . The Department of State has been criticized for not enforcing the law, which requires U.S. citizens to carry passports when traveling abroad. Those who do n't are supposed to undergo further screening to confirm their citizenship . Compliance rates are much higher along the Canadian border than the Mexican one . The border patrol agency says its phased-in compliance effort is working .
A Homeland Security department IG report looks at enforcement of a new passport law . The Department of State has been criticized for not enforcing the law, which requires U.S. citizens to carry passports when traveling abroad. Compliance rates are much higher along the Canadian border than the Mexican one . The border patrol agency says its phased-in compliance effort is working .