I was born and raised in Chicago Illinois I'm 50 years old going to get married two girl and Ghana who has two children 1 is 4 years old

Hello James. You can sponsor your Fiance for a K visa and her two children, as derivative beneficiaries, and once those visas are available, they can travel to the states. The processing time can run about 9 months to a year before their visas are available. You must marry your fiance within 90 days after she enters the country,  and then you can adjust status for both her and her two children to obtain their green cards, which is another months long process The USCIS filing fees, from start to finish for your fiance is about $1,500, and her two kids are also in that ball park, but less than the fiance. Most law firms would charge anywhere from a low of $2,000 to $7,500. My fees are on the low end, and you can pay in several payments.  Counsel anywhere can assist you.