CDC对没打疫苗的外国人可以进入美国开的几种特例，小德好像都不沾边，能比赛会是奇迹

Several categories of noncitizen nonimmigrants are excepted from the requirements of the Presidential Proclamation and CDC’s Order Implementing the Proclamation which include:

• Persons on diplomatic or official foreign government travel
• Children under 18 years of age
• Persons with documented medical contraindications to receiving a COVID-19 vaccine
• Participants in certain COVID-19 vaccine trials
• Persons issued a humanitarian or emergency exemption
• Members of the U.S. Armed Forces or their spouses or children (under 18 years of age)
• Sea crew members traveling with a C-1 and D nonimmigrant visa
• Persons with valid visas (excluding B-1 [business] or B-2 [tourism] visas) who are citizens of a country with limited COVID-19 availability
• Persons whose entry would be in the national interest, as determined by the Secretary of State, Secretary of Transportation, or Secretary of Homeland Security (or their designees)

https://www.cdc.gov/coronavirus/2019-ncov/travelers/international-travel/travel-assessment/foreign-not-fully-vaccinated.html