"Why is there no Republican that can explain this as simply and directly as Walter?"
Because Williams has fundamental principles to guide his thinking. The Republicans have long since substituted tactics for principles.
The libertarians are the only ones in US politics with principles - we know this because we can always predict how the libertarians will respond to a particular question or problem. Today, their principle of personal freedom over government intrusion is looking better and better to those that have not been forced to consider their own principles carefully. Here's hoping the Republicans can adopt the marketable libertarian principles to increase their voting power, and restore Williams-like thinking in the party.