Ok, I'm from America but I came to the UK to study for my undergrad degree...
why??
1) Its SO much cheaper... I was going to go to Columbia and that costs about 32,000 quid and now I'm at Notts and I'm paying about 14000 quid + you wont get any loans or scholarships from America so unless you're flowing with cash then you're going to put your parents/you in debt for a LONG time
2) It's so much longer to get a legit degree... doing just the four years undergrad won't get you anywhere in life anymore, you have to go to grad school if you want to be making any worthwhile money
3) The amazing thing about American uni's is that they look at everything - academics, extracurriculars, volunteer work, regular work, etc.... They want well rounded people which is great for us Americans because thats what is promoted at school! However in the UK, your academics are very focused on what you plan on doing at uni and all the extras are not paid as much attention to as they are in America... so you'd be coming in with a real disadvantage because you wont be seen as well rounded as your American competitors.
I wish you the best of luck mate but its a hard hard road... even for an American, never mind an international that isnt given special priorities (e.g. refugee, from developing nation, etc...) xx