The reason why people don’t hire foreigners directly is that you can only apply for h1b on April and if you are lucky to be selected in lottery you can start working from October. How many employers would want to hire someone with only 30% of chance of being able to work in 6 months?
The word referral is loaded. It could mean someone connects you with recruiter or means they take your resume and submit in the system and get $$ if you are hired. If you looking for “reference” kinda referral, Blind is not the place.