Elizabeth Goitein Profile picture
Nov 21, 2019 9 tweets 2 min read Read on X
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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More from @LizaGoitein

Nov 5
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…
Read 25 tweets
Oct 20
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…
Read 23 tweets
Sep 12
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
Read 24 tweets
Aug 12
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
Read 5 tweets
Jun 14
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…
Read 16 tweets
Jun 13
A federal judge has issued a temporary restraining order (TRO) requiring Trump to return control of the National Guard to CA Governor Newsom. The order is accompanied by a powerful opinion that affirms the rule of law, separation of powers, and the First Amendment. 1/23
U.S. District Judge Charles Breyer found that CA is likely to succeed on the merits of some of its claims, which is the first and often most important criterion for issuing a TRO. To start, the law Trump relied on to federalize the Guard didn’t give him that authority. 2/23
That law, 10 USC 12406, applies only if there’s an invasion by a foreign nation or a “rebellion or danger of a rebellion against the authority of the Government of the United States,” or if the President is unable to execute federal law without using the military. 3/23
Read 23 tweets

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