Sony Xperia XZ and Xperia X Compact won't have fingerprint scanners in the US
The non-US Xperia XZ and Xperia X Compact have fingerprint scanners embedded in their power buttons, but Sony decided to remove them from the devices that will be shipped in the States. Perhaps this shouldn't come as a surprise, since Sony did the same with the Xperia X Performance, Xperia Z5, and Xperia Z5 Compact. As for why this is happening, there is no official explanation.
Already available to buy in the UK and a few other markets, the Xperia X Compact will probably be the first among Sony's two new smartphones to be released in the US. We'll let you know more on this as soon as we have new details. Meanwhile, you should check out our Sony Xperia X Compact hands-on, and our Sony Xperia XZ hands-on.
source: Sony Mobile US (Xperia XZ, Xperia X Compact)