The U.S. banks are going with chip and signature for the most part. The reasoning is the amount of fraud with actual cards being stolen or lost is very small. The bulk of credit card fraud is with cloned cards where someone gets the credit card number and makes a new card and uses that. The chip is supposed to make that harder.

When Canada switched to chip and pin, one of the banks sent the PIN numbers so far in advance, when the time came to use them, a significant number of users forgot their pins and transaction volume went way down.

I have read one major American bank has decided to go chip and pin, but have not be able to figure out which one. 4 other major banks are going chip and signature.

I have a Canadian bank card and the chip on that card is noticeably bigger than my cards with chip and signature chips on them.