You can bring as much money as you want to the United States. There are no limits or restrictions. A simple way to do this would be to wire-transfer the money into your bank account in the US and you would have to provide a source-of-funds proof statement, how did you get the money?

Contrary to popular belief, you can bring the same in Cash. Heck, you could bring in a suitcase full of money or a container full of cash, no issues. You just have to declare it to the Customs & Border Patrol any sum in excess of US$ 10,000 or greater, and as always, you will have to show a source-of-funds statement.