For U.S. and Canadian citizens: Proof of citizenship such as a valid passport or certified copy of birth certificate along with government issued photo ID (driver’s license). Naturalized US Citizens: Valid passport or naturalization papers along with government issued picture ID.

If you are a non-resident visitor, to enter Ontario/Canada, you will need a valid passport and a valid visa (if necessary). For an overview of customs information for visitors to Canada, visit the Canadian Border Services Agency website. Another excellent resource is the Government of Canada's main internet site for international residents. See similar questions...

U.S. citizens traveling to Canada, Mexico, the Caribbean, and Bermuda who have applied for but not yet received passports can nevertheless temporarily enter and depart from the United States by air with a government issued photo identification and Department of State official proof of application for a passport through September 30, 2007. Official proof of a U.S. passport application is required and can be obtained at http://travel.state.gov/ . See similar questions...

This depends on which country in which your visit originates. If you are from the U.S. or Canada, you will need your passport or notarized birth certificate with state issued ID. You will also need a tourist card unless you are traveling for less than 72 hours within the border zone (usually no further than 20 miles south of the U.S. border except in Baja California and Sonora which have extended their zones). See similar questions...

NO. You cannot re-enter US if your h1b visa stamping was rejected, you have to travel to your home country and get the visa to come to USA. See similar questions...

This varies by nationality and by age, so please check with your airline or travel agent when booking your flight. US and Canadian citizens are required to have a valid passport. When entering México, you will go through Immigration, where they will check your documents and stamp your tourist card (a blank card will be given to you on your flight). Note the number of days you will be in México on this card. See similar questions...

Dogs and cats entering Costa Rica must have a health certificate issued by a licensed veterinarian, endorsed by a veterinarian service (VS) veterinarian. The examination for the certificate must be conducted within the two weeks prior to traveling to Costa Rica. The required vaccinations are: distemper, hepatitis, lestospirosis, parvovirus and rabies (for animals 4 months or older. See similar questions...

If you are going to Puerto Peñasco (Rocky Point) you will only need your driver's license and you don't even have to stop and get a visa since it is considered in the "free zone." You will, however need Mexican car insurance (see next question). If you plan to go to Mata Ortiz, or further south into Mexico you will need to get a tourist visa (FMT) either at the border or in the US through a Mexican Consulate before your trip. There is a tax on this of about $18. See similar questions...

The best place to go for this information is the United States State Dept. web page: http://travel.state.gov/mexico.html. For citizens of the United States the best document is a passport. However a certified copy of a U.S. Birth certificate, a naturalization certificate, a Consular Report of Birth Abroad, or a Certification of Citizenship accompanied by a picture ID such as a driver's license will should also suffice. More stringent requirements may apply if you are traveling with minors. See similar questions...

You will need to provide a notarized birth certificate and photo ID or a passport at the airport when you check in. The US government will be requiring passports for travel to Mexico soon, so it's advisable to get a passport if you don't have one. You will also need a Tourist Card, which will be provided to you by your airline. See similar questions...

In general to enter Mexico you need to obtain a Tourist Card (FMT). To get your Tourist Card you will need to prove citizenship, a passport is best for this purpose. Other forms of accepted proof of citizenship include, certified birth certificate, voter's registration card, naturalization papers or a notarized affidavit of citizenship. A photo ID is very helpful, a passport can serve as proof of citizenship and photo ID. Airlines will furnish the Tourist Card. See similar questions...

All U.S. visitors to Mexico are required to carry proof of citizenship, such as a valid passport or certified birth certificate. If you are a US citizen you may enter Mexico with a notarized copy of your birth certificate. It is strongly advised, however, to enter with a valid passport since this is the usual method of entry. You will receive a tourist visa on the airplane which you will need to fill out before going through customs. See similar questions...