At the #demdebates, Tom Steyer says he would use “the emergency powers of the presidency” to fight climate change. Here are a few observations about what that might mean, and some questions. 1/9
There are 123 statutory authorities that become available to a president when s/he declares a national emergency, as we catalogued at the @BrennanCenter last December. 2/9 brennancenter.org/our-work/resea…
These powers cover a lot of ground, but they’re not limitless in their reach. None of them is intended, designed, or well-suited to address climate change. 3/9
The Stafford Act is another statutory emergency power. It’s useful for freeing up resources to deal with isolated natural disasters. But it doesn’t authorize the kinds of long-term policy changes we need to combat climate change. 4/9
How about the Constitution? It authorizes Congress to suspend habeas corpus and provide for calling forth the militia to execute the law, suppress insurrections, and repel invasions... but it doesn’t give the president any express emergency powers. 5/9
That leaves the idea of “inherent” constitutional emergency powers, a notion embraced by some conservative legal theorists and defenders of executive prerogative. It’s a controversial theory with significant implications. 6/9
Any presidential candidate, Democrat or Republican, who believes the president has inherent constitutional authority to deal with climate change or any other emergency powers should answer these questions: 7/9
Where in the Constitution do you find the source of this power? What do you consider to be the criteria for invoking it? What is the full range of actions that it authorizes, & what limits apply? Do you acknowledge Congress’s authority to legislate restrictions on that power? 8/9
Climate change is the biggest threat we face today. But as Trump has shown, emergency powers and other claims of broad presidential power can be dangerous. It’s important to know what powers the candidates believe presidents have, and where they think the limits are. 9/9
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The Trump administration claims there was no need for Congress to authorize the military attack in Venezuela because the military was merely supporting a “law enforcement operation” (i.e., executing arrest warrants against the Maduros). That’s wrong on multiple counts. 1/20
Under our Constitution, decisions about when, where, and against whom to deploy military force are made by Congress, not the president. This system ensures that the solemn decision to risk U.S. blood and treasure is made with democratic debate and public accountability. 2/20
When U.S. military aircraft drop bombs on another country, killing 80 people in the process, that’s a use of military force, regardless of the intent. Even Hegseth described it as a “joint military and law enforcement raid” rather than a pure law enforcement action. 3/20
The Supreme Court just heard oral arguments in the challenge to Trump’s worldwide tariffs. No matter how the Court rules (and I’ll do just a tiny bit of tea leaf-reading here), its decision will have enormous implications for the scope of presidential power. 1/25
Spoiler alert: some conservative justices had tough questions for both sides, making it hard to say with certainty where they’ll land. But given the degree of pushback on key administration arguments, it’s looking quite possible—if not likely—the tariffs will be struck down. 2/25
I discussed the stakes of the case and the various arguments before the Court in a recent @BrennanCenter explainer. The rest of this thread might make more sense if you read that first… but will briefly summarize here. 3/25 brennancenter.org/our-work/analy…
By a 2-1 opinion, the Ninth Circuit just held that the president can federalize National Guard forces and deploy them when protesters shine flashlights in the eyes of ICE officers. It’s one of the most dangerous and legally flawed court decisions I’ve seen this year. 1/23
Trump had federalized 200 Oregon National Guard forces after posting on social media that Portland was “War ravaged” and that ICE facilities were “besieged.” He invoked a law that permits federalization of the Guard when the president is “unable to execute” federal law. 2/23
It appears Trump had watched a FOX News segment that misleadingly aired footage from 2020 of chaos in Portland. In court, administration officials struggled to find instances that would substantiate Trump’s characterization of Portland today. 3/23 dankennedy.net/2025/10/04/tru…
Facing stiff legal and political resistance to his military deployments in Los Angeles and D.C., Trump now seems to be shifting strategies and targeting blue cities in red states, such as Memphis and New Orleans. It’s bad news with a small silver lining. 1/24
First, the silver lining. There is simply no legal way to deploy troops for crime control purposes in Chicago, Baltimore, New York, or any other city in a state where the governor objects. To use Guard forces in those states, Trump would have to federalize them… 2/24
…and to do that, he needs statutory authority. There is no law, however, that allows the president to federalize the National Guard to address local crime. And even if there were such a law, federalized National Guard forces become subject to the Posse Comitatus Act (PCA)… 3/24
Trump's use of the DC National Guard and potentially other states' Guard forces to respond to local crime in DC violates the centuries-old principle against using the military as a domestic police force--a principle that is critical to democracy and individual liberty. 1/5
Unfortunately, there are major loopholes in the Posse Comitatus Act (PCA), which is the law that enshrines that principle. Trump is exploiting two of those loopholes: the unique command/control structure of the DC National Guard... 2/5
...and 32 USC 502(f), a provision of law under which Guard forces acting under state command and control can perform federal missions free from the constraints of the PCA, even when effectively taking direction from the president. 3/5
The Defense Department has confirmed that U.S. Marines detained a civilian—reportedly an Army veteran who crossed a yellow tape boundary on his way to a Department of Veterans Affairs office. This is an apparent violation of the Posse Comitatus Act. 1/16 reuters.com/world/us/us-ma…
The Posse Comitatus Act (PCA) bars federal armed forces from directly participating in law enforcement activities unless “expressly authorized” by statute or by the Constitution. It’s a critical protection for individual liberty and democracy. 2/16
What constitutes a law enforcement activity for purpose of the PCA isn’t always clear. But activities that unambiguously fall within that category include arrests, searches, and seizures of persons or property. 3/16 congress.gov/crs-product/R4…