That has not always worked out. For instance, "clamming up" in the midst of questioning, but not verbally invoking your right to remain silent has been used aga

That has not always worked out. For instance, "clamming up" in the midst of questioning, but not verbally invoking your right to remain silent has been used against a defendant. The entire process is a minefield which is only avoided by immediately stating your rights, and not cooperating with the police at all. Unfortunately, in the USA, treat the police as a third-world country.