The U.S. may have lifted the Global Level 4 Health Advisory that had been in place since March, but Americans who want to travel abroad have very few options.

This reality is hammered home in a digital ad for Joe Biden airing on social media that begins with footage of President Trump saying, “We’re building the wall” and “Don’t even think about it,” before turning to a map that shows how virtually every country in the world has either banned or restricted Americans from visiting. The 19-second spot ends with two lines of copy: “Trump didn’t build a wall. The world built one around us.”

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Biden’s ad highlights that American travelers have few choices these days. The high infection rate of COVID-19 across most of the United States continues to be a deal breaker for most of the world’s countries that have controlled the disease more successfully. Here’s an overview:

Canada has banned Americans from crossing the U.S.-Canada border for non-essential travel until late August at the earliest. An overwhelming majority of Canadians — 81%, according to a Globe and Mail survey — want the border to remain closed.

The United States did not make the cut for the European Union’s “safe list,” which means Americans cannot travel to most European countries. A couple of exceptions are Turkey and Croatia. The U.K. and Ireland say they welcome U.S. tourists but impose restrictions — typically a 14-day quarantine upon arrival — as a disincentive. There’s nothing like booking an expensive international trip only to spend it in your hotel room or vacation rental.

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The countries of Asia and Oceania — Australia, Japan, Malaysia, New Zealand, Singapore, and so on — are all closed to U.S. citizens. China has banned all U.S. travelers and all Chinese travelers have been banned from the United States.

Americans can fly into Dubai or Abu Dhabi in the United Arab Emirates as long as they can present a recent negative COVID-19 test.

French Polynesia reopened to travelers from all countries in mid-July. Travelers must have proof of a negative COVID-19 test taken no later than 72 hours before their flight. 

Fancy a trip to Africa? Tanzania reopened to visitors on June 1, and travelers are required to fill out a Health Surveillance Form and submit “intensive” screening. Rwanda opened to American travelers earlier this month. Visitors must present a negative COVID-19 test taken within 72 hours of arrival and undergo a second COVID test upon arrival, with results delivered within 24 hours, during which time they must remain in designated hotels at their own cost.” On August 15, Egypt is opening to American travelers with a negative test.

Quite a few Caribbean islands are open to Americans who can show a negative PCR test result for COVID-19, typically within 72 hours of arrival. These include Antigua and Barbuda, Aruba, Barbados, Bermuda, Dominican Republic, Jamaica, St. Bart’s, St. Lucia and Turks and Caicos. The Bahamas has a stricter policy in place: travelers must both show proof of a negative COVID-19 test and quarantine for two weeks upon arrival.

Even U.S. territories are skittish about rolling out the welcome mat for Americans. Puerto Rico requires continental Americans to submit a negative COVID-19 test taken within 72 hours of arrival. Want to visit the U.S. Virgin Islands? If you live in a state where the infection rate is above 10%, you are required to present a negative PCR test taken within five days of arrival.

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So where can Americans travel the most freely, with no test and no quarantine?

While the U.S.-Mexico land border is closed through at least late August, Americans are free to fly to a handful of Mexico’s touristy beach destinations, including Cancun, Puerto Vallarta and Cabo San Lucas without having to quarantine or present a negative COVID-19 test.

The Maldives in the Indian Ocean has been open to international tourism since mid-July. There are no testing or quarantine requirements, but visitors must have a confirmed booking on one of the “resort” islands.