在网上找到一段话，最后一句好像是指这种情况下不用签证

麻烦有经验的人看看我的理解对不对，谢了！
Note: Nationals of the following countries must apply for a transit or entry visa in advance from the Dept of Labor and Immigration by post or fax stating the nature of visit; return address; fax and telephone number; copy of travel itinerary from booking agent, including proposed entry and departure dates and names of hotel or address while in the Northern Mariana Islands: Afghanistan, Albania, Algeria, Bahrain, Bangladesh, Bosnia-Herzegovina, Bulgaria, Cambodia, China (PR) except holders of Hong Kong (SAR) passports, CIS, Croatia, Cuba, Cyprus, Czech Republic, Egypt, Estonia, Hungary, India, Indonesia, Iran, Iraq, Jordan, Korea (Dem Rep), Kuwait, Latvia, Lebanon, Libya, Lithuania, Macedonia, Malaysia, Mongolia, Morocco, Nepal, Nigeria, Oman, Pakistan, Palestine National Authority, Philippines, Poland, Qatar, Romania, Saudi Arabia, Serbia and Montenegro, Slovakia, Somalia, Sri Lanka, Sudan, Syria, Thailand, Tunisia, Turkey, United Arab Emirates, Vietnam and Yemen, unless having a US Visa in their passport, which should be valid for a minimum of 60 days after entry.