USCIS Guidance on Payment of N-400 Application Fee with a Credit Card
You may pay for your N-400, Application for Naturalization, using a credit card. There is no additional fee to pay with your credit card. The N-400 is the only form that can be paid for by credit card using the G-1450, Authorization for Credit Card Transaction.
Acceptable Credit Cards
You may use Visa, MasterCard, American Express and Discover. You may also use gift cards with Visa, MasterCard, American Express and Discover logos.
I was really excited when I heard from Amrita that my labor certification has been approved so quickly. I would like to thank Mr. Khanna and his staff for their dedicated support in this regards. I am expecting the same level of support from you for the rest of green card process.