Because it’s only storing a few data points on select fingers, this data is very unlikely to be useful to law enforcement for things like matching a partial print from crime scene to an individual. So unless Apple did something radically different than earlier types of fingerprint scanners, the type data it will collect and store isn’t something that would likely be used to build some sort of huge fingerprint database.

And just in case that doesn’t put you at ease, Apple claims fingerprint data stored as part of the Touch ID will stay on the phone rather than be uploaded to some central database. It’s unclear if Apple will still have access to fingerprints despite that state of affairs, but assuming it doesn’t, it would be hard for the NSA to subpoena Apple for that biometric data.