On the campaign trail, President Donald Trump promised to roll back federal regulations. And at the Conservative Political Action Conference (CPAC) in February, chief strategist Steve Bannon said that the goal of the administration was the “deconstruction of the administrative state.”

Trump has delivered on those pledges, signing over a dozen laws reversing Obama-era regulations, marking the most substantial legislative achievement of his first 100 days in office.

Politico has downplayed Trump’s slew of repeal laws, describing them as “the only substantive bills Trump has signed so far.” And, in keeping with a media-wide effort to separate Trump from his voting base, Politico claims that “none of them evoke the drain-the-swamp anti-establishment populism that Trump rode to the presidency.”

The opposite is true, on both counts: Trump has permanently removed some of the regulatory muck that the “swamp” uses to feed itself.

His weapon has been the Congressional Review Act (CRA), which Politico calls “obscure.” It was signed by President Bill Clinton in 1996, when he was campaigning for re-election and determined to prove he had learned the lessons of the 1994 midterm elections — that “the era of big government is over.” The CRA allows Congress to overturn rules by a federal agency 60 days after they are reported to Congress. It was aimed at rules made by “lame duck” presidents.

But as the Wall Street Journal‘s Kimberly Strassel noted in January, two factors make the CRA particularly powerful. One is inherent to the legislation itself, which provides that a regulation, once repealed, cannot be promulgated again without a new act of Congress.

The other factor is the arrogance and incompetence of the Obama administration, which failed to report many rules to Congress — meaning the 60-day window never began even for some earlier Obama rules.

Here is the list of Obama-era regulations that President Trump has managed to repeal using the CRA so far:

The window for repealing rules from the last several months of Obama’s presidency closes in May — though some argue that President Trump may have the power to repeal regulations dating back to the start of Obama’s first term.

Regardless, the use of the CRA to repeal regulations has put future administrations on notice that there is a limit to government’s regulatory reach, and that given the opportunity by the voters, conservatives will enforce those limits.

It is true that the Trump administration has not yet signed a major, signature piece of legislation. Neither had Obama in the first 100 days — unless one counts the stimulus, which wasted nearly a trillion dollars and inspired the Tea Party. The “failure” of the American Health Care Act, which intended to repeal and replace Obamacare, may be temporary, as Republicans are determined to revisit the issue and propose new legislation that can be signed by the 2018 midterms.

Even without the CRA, the Trump administration can claim it scored two other major achievements in the confirmation of Supreme Court Justice Neil Gorsuch and the renewal of America’s military deterrent after the recent attack on Syria.

But the use of the CRA is no small accomplishment. Future administrations will never be as careless in expanding the executive authority of the federal government far beyond the scope of the authority envisioned in the U.S. Constitution.

Joel B. Pollak is Senior Editor-at-Large at Breitbart News. He was named one of the “most influential” people in news media in 2016. His new book, How Trump Won: The Inside Story of a Revolution, is available from Regnery. Follow him on Twitter at @joelpollak.