Another method which can be used to pay from foreign bank accounts is the IRS wire transfer. Read more about this method and how to do it HERE.
Many states including California have on line portals to allow payments without sending checks directly from your bank account.
Of course the CPAs and Attorneys at TaxMeLess are always there to help you with your expatriate, nonresident and international tax return forms, payments plans and citizenship surrender (stop paying US taxes forever). You can email us by clicking HERE