My boyfriend immigrated to America, and I am at home. What procedure does he need to go through to get married with me?

You need to apply for a fiancee K 1 fiancee immigration-visa from the US Immigration Bureau. Get married within 90 days after entering the country.

The length of tax payment is not important. However, because he just arrived in the United States with a green card, when you apply for a fiancee visa, some immigration officers can reasonably ask him to ensure that the economy can support you, otherwise you will become a welfare provided by the US government. One of his financial guarantees is tax bills, bank deposits, housing and property.