If Charles Schwab isn't for you, there are many small banks in the U.S. that rebate all ATM fees worldwide, and don't charge account fees or monthly fees with a $1000 minimum balance. I keep an account at one of these banks in California just for traveling, so I can get local cash anywhere without fees.
The downside is you may have daily withdrawal limits, so if you need bigger chunks of money it may not work for that.
Be very careful before wiring money here, as the regulations change frequently and your money could get tied up easily. Needing to prove the source of the money is likely, and even if you have bank statements showing it in your account for the last 12 months, you may still have to prove where it came from- paychecks, real estate sale, whatever. You may also need to demonstrate what you intend to do with the money here- buy real estate, start a business, etc. And don't expect to find this all out at once. They will ask you for one thing, and when you come back with that, they will ask for another. A lot of time can pass.
After proving everything, the government may still withhold 10% for one year, and they wont pay you any interest, either.
Of course, it may also go smoothly for you, with no problems at all. Welcome to Argentina!
