I would stick with using your ATM card as that is what we do.
However, I doubt if the US authorities are going to get excited over you transferring money out of country. I recently sent $100k to my account in Australia and there was no question asked, nor was it delayed.
I be a girl, he's a boy. Think I maybe FIRED since July 08. Mid 40s, no kidlets. Actually am totally clueless as to what is going on with DH.