The Atlantic – From seizing control of the internet to declaring martial law, President Trump may legally do all kinds of extraordinary things: “…It would be nice to think that America is protected from the worst excesses of Trump’s impulses by its democratic laws and institutions. After all, Trump can do only so much without bumping up against the limits set by the Constitution and Congress and enforced by the courts. Those who see Trump as a threat to democracy comfort themselves with the belief that these limits will hold him in check. But will they? Unknown to most Americans, a parallel legal regime allows the president to sidestep many of the constraints that normally apply. The moment the president declares a “national emergency”—a decision that is entirely within his discretion—more than 100 special provisions become available to him. While many of these tee up reasonable responses to genuine emergencies, some appear dangerously suited to a leader bent on amassing or retaining power. For instance, the president can, with the flick of his pen, activate laws allowing him to shut down many kinds of electronic communications inside the United States or freeze Americans’ bank accounts. Other powers are available even without a declaration of emergency, including laws that allow the president to deploy troops inside the country to subdue domestic unrest. This edifice of extraordinary powers has historically rested on the assumption that the president will act in the country’s best interest when using them. With a handful of noteworthy exceptions, this assumption has held up. But what if a president, backed into a corner and facing electoral defeat or impeachment, were to declare an emergency for the sake of holding on to power? In that scenario, our laws and institutions might not save us from a presidential power grab. They might be what takes us down…”

• See also the Washington Post – Trump aides lay foundation for emergency order to build wall, saying border is in ‘crisis’ “Vexed by Democrats’ refusal to yield to his demand for $5.7 billion for wall funding, the president increasingly views a national emergency declaration as a viable, if risky, way for him to build a portion of his long-promised barrier, according to senior administration officials…”