The problem with the constitution is that it provides few good legal mechanisms to enforce the provisions of the constitution. It doesn't incentivize government officers and representatives to follow the constitution. If there were clear consequences for doing things or supporting things that violate the constitution, and if there were clear procedures for indictment with a broad ability for those procedures to be started, we would be in a far beter position to protect the constitution. As it stands, lawmakers can just create unconstitutional laws that are in place for years or even decades until someone brings it all the way to the supreme court. And once they do, the lawmakers that created those laws aren't held responsible at all - no consequences for them. That must change if we want to protect the constitution.