I am doing the construction business in Africa & presently holding 5 years B1/B2 visa. I already visited to my parents/sister's in US last year in holiday. I am still unmarried & my US citizen sister already done the petition in 2007 as family file under F4 category. I am interested to invest $200,000 to $300,000 from my personnel/ company account to US in Motel business where motel is not running in smoothly. Before I can invest what is the legal way to get the green card? or can I firstly in in US on B1/B2 visa & then can I apply for Adjustment of status on investment basis? which is the best option for me.