...is surprisingly simple: It's a sledgehammer.
Our existing government is made up of masons; the legislative branch exists to build new walls, the Supreme Court -at best- exists to make sure the walls are in the right places, and the Executive branch mans the walls.
We need a branch whose purpose is to knock walls down. Our government is fundamentally constructivist - it needs a deconstructivist element. A branch devoted to knocking down the things the legislature builds.
The courts have kind-of sort-of fulfilled this role in the past, but only for the most egregious cases. The legislative branch has this power, but rarely if ever uses it; they're elected to fix problems in society. Knocking down parts of the government just makes it harder for them to do their job.
So break the legislative branch's powers up. One branch to construct, one branch to destroy. Hell, even give them the power to send the bills back to the legislation with notes on what needs to be adjusted and why - they can't propose new legislation, but they can remove legislation and suggest changes.
And give them a reason. Put a cap on the total pages of law in the government. Is a single person's life even long enough to -read- all the laws on the books right now, after all?