Many consulates request this letter to show that you have enough money to fund your trip and decide on your visa application. Stick with complete joint account statements.What is an Immigration Bank Letter? JPMC Customers may request a US Immigration Bank letter to assist with meeting US Immigration application requirements. Sufficient funding to support your stay in the U.S. is required. You must input the specific total monetary amount you will have available to support your stay. You might need a bank letter to verify the assets in the I864 for the dependents, but not much more. Most banks have a template for the letter addressed to immigration. He will need the letter and copies of his updated bank book. Need a Chase bank letter for immigration?