Loans For People With Bad Credit

I working at home because I am disable, the only way I make money is building a website to earn money and all my money go to the bank, i do not get paystub but cash because it been deposit in the bank, i want to get an credit card but I have bad credit, i will like to know how you build an credit if you cant get an credit card, i want one for orders and things of that nature! Do someone no how ,what bank offer credit without looking in to your credit?

I am planning to go to US in April. I will be in credit however have missed payments etc and have a bad credit history. Will this affect me getting a visa?