The goal of the ACLU, which was founded by a Communist, has always been to use continuously evolving interpretations of the Constitution to slowly render the Constitution meaningless.
That's why I retreat into the Declaration of Independence, then start by quoting the "endowed by their Creator with certain unalienable Rights" line to them.
Once I've established that they're "Declaration deniers", I can then begin taking them apart, piece by piece, moving back into the Constitution one step at a time.