Currently you have a couple of options (USA is a high-risk country);

If your journey includes a transfer in the Netherlands or another country, the rules are as follows:

• If you start your journey in a safe country and change planes in a high-risk country
  without leaving the airport, you are not required to present a negative test result. If you leave the airport, however, the negative test result requirement does apply to you.
• If you start your journey in a high-risk country and change planes in another country
  the negative test result requirement applies to you, even if the country where you change planes is a safe country. This means you must present a negative NAAT (PCR) test result based on a sample collected no more than 24 hours before boarding. Or you can present both a negative NAAT (PCR) test result based on a sample collected no more than 72 hours before arrival in the Netherlands and a negative rapid test result based on a sample collected no more than 24 hours before boarding. The result remains valid during the layover and in the event of a delay.
• If you start your journey in a high-risk country and change planes in the Netherlands you will only need to show the results of an NAAT (PCR) test based on a sample collected no more than 72 hours before arrival in the Netherlands.

Safe countries with a low COVID-19 risk

Safe countries outside the EU/Schengen area

• Australia
• New Zealand
• Rwanda
• Singapore
• South Korea
• Thailand
• China (mainland China, Hong Kong, Macau). Only if China lifts entry restrictions on European travellers. Travellers from China are not required to present a negative COVID-19 test declaration.

Safe countries within the EU/Schengen area

• Iceland
• Portugal

Safe countries within the Kingdom of the Netherlands

• St Maarten
• Saba
• St Eustatius