Chip and pin machines don't necessarily support nfc...
By now, most people are aware of the coming October 2015 liability deadline that encourages US merchants to install a chip & pin terminal.
That's just one push.
A older, related Visa requirement for escaping yearly security reviews, is that the terminals must include both chip and NFC readers.
"Effective October 1, 2012, Visa will expand its Technology Innovation Program (TIP) to the U.S.
TIP will eliminate the requirement for eligible merchants to annually validate their compliance with the PCI Data Security Standard for any year in which at least 75 percent of the merchant’s Visa transactions originate from chip-enabled terminals.
To qualify, terminals must be enabled to support both contact and contactless chip acceptance, including mobile contactless payments based on NFC technology."
- Visa
Visa is very serious about promoting contactless methods of payment.