Replacing legislators is part of the system

The core of the system is the U.S. Constitution, not what 51% of the legislators want. The 51% cannot override the Constitution. The standard for Constitutional amendments is much higher than 51%.

One person's willingness to give up their privacy rights does not void another person's unwillingness to give up their Constitutional rights.

Get a court order to search and seize, or amend the Constitution. Obey the Constitution. The Constitution has methods for being amended.