Gam3r01 :
If they "need" the information on that device they can get it
With properly done encryption, the only practical way of decrypting the device would be to obtain the encryption password used to protect the AES256 encryption key. If the persons who know the key refuse to reveal it or are unavailable/dead, the information is very likely lost.
Threatening manufacturers with $2500 fines is not going to stop people from unlocking their devices and putting an AOSP/Cyanogen/custom/whatever build with proper encryption put back in or using apps with their own stronger encryption.
Politicians, lobbyists, lawmakers, etc. who believe otherwise are wasting everyone's time and money. If smart criminals want to use proper encrypted communications, there is not much that can be done to stop them without posing a similar or greater threat to normal people's privacy and information security.