Last I knew Barclays is the only one who offers a credit PIN that you can use at kiosks that only accept PINs. I also heard Navy Federal was rolling it out but their services are a military+family only
Barclays has chip and PIN capability, but it doesn't default to PIN if signature is available - it will only trigger if that's the only verification method, which is almost never the case in the US.
(Source: I have one, and the only time I've entered the PIN is at a British train ticket machine.)
(Source: I have one, and the only time I've entered the PIN is at a British train ticket machine.)