One of his proposed amendments is to disallow governments mandating products change their source code to allow entities access into the data (e.g., a backdoor for the NSA). So basically, allowing encryption, which would be huge.
That shouldn't even need to be an amendment. With a government based on an enumerated and limited set of powers (which the US government is in theory though blatantly not in practice), it should suffice to not explicitly permit them to do so.
