ESTA,
(Electronic System for Travel Authorization FAQ) could be changed soon. I read elsewhere that the TSA, Transportation Security Administration and others want some changes made to the ESTA program.
One of the changes is something called a "good character report". For citizens of the UK, my understanding is, it would mean people authorized to travel via the ESTA from the UK (Visa Waiver Program) may have to take with them a current copy of their "subject access request" (which I think is like a personal CRB, available via the data protection act from your local police). This will apparently, speed up your entry to the USA
They also want access to the Disclosure and Barring Service computer systems (Criminal Records Bureau), if this is forthcoming they
may allow visas issued online for countries who give them the access they want.