Bella is a citizen and resident of Brazil. Terri is a citizen and resident of Argentina. Maria is a citizen and resident of Chile. They all work for the same company. Their jobs required them to travel to the U.S. Originally, they were needed in the U.S. for many months to help build up the company's U.S. business. Now, they travel to the U.S. less frequently. None of them have a Green Card or any special Visas. Brazil, Argentina and Chile do not have a tax treaty with the United States.

Bella was present in the U.S. for 330 days in 2021, 210 days in 2022, and 60 days in 2023.

Terri was present in the U.S. for 360 days in 2021, 300 days in 2022, and 25 days in 2023.

Maria was present in the U.S. for 240 days in 2021, 255 days in 2022, and 50 days in 2023.

Is Bella a U.S. resident for U.S. tax purposes in 2023? Explain
Is Terri a U.S. resident for U.S. tax purposes in 2023? Explain
Is Maria a U.S. resident for U.S. tax purposes in 2023? Explain