<a href="https://www.nytimes.com/2020/03/13/us/politics/coronavirus-national-emergency.html" target="_blank" rel="noopener noreferrer">Trump Declared a National State Emergency Over Coronavirus. Here's What that Can Do</a>  <font color="#6f6f6f">The New York Times</font>

The president’s action will free up funds and lower legal barriers for responding to the pandemic.

President Trump on Friday declared a national emergency over the coronavirus pandemic.Credit…Erin Schaff/The New York Times

WASHINGTON — President Trump on Friday signed an emergency declaration over the coronavirus pandemic, unlocking certain government powers to deal with the public health challenge. Here’s a breakdown of what that means on a legal and practical level.

It’s special authority that a president can unlock and use in exigent circumstances.

Congress has enacted more than 100 laws that permit a president to declare that emergencies exist, freeing the government from abiding by some of its usual legal constraints. This flexibility can include permitting the federal government to spend additional funds, including to aid state and local governments, and temporarily lowering legal barriers to certain actions.

In some cases, an umbrella law called the National Emergencies Act that regulates how presidents can use exigent power must be invoked to use another, setting up a complex cascade of effects. In public health, emergency power laws include provisions of the Public Health Service Act, the Stafford Act, the Social Security Act and other statutes.

It frees up federal funds and other resources to help when “federal assistance is needed to supplement state and local efforts and capabilities to save lives and to protect property and public health and safety.”

The Stafford Act is the government’s main mechanism for responding to major disasters and emergencies. It permits tapping into an account that currently has more than $40 billion, which it could use to do things like buy medical supplies and equipment.

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If a president grants a declaration, the Federal Emergency Management Agency can coordinate a response. The act also empowers the president to direct any federal agency to use its personnel, facilities and equipment to support state and local emergency efforts, disseminate public health and safety information, provide public health and safety measures, and distribute supplies like medicine and food.

While the Stafford Act is more often activated in cases of major disasters that cause property damage, like hurricanes and floods, it has also been used in public health emergencies. In 2000, President Bill Clinton used it to cover mosquito control operations in New Jersey and New York during the outbreak of the West Nile virus.

Yes, but it was under a less sweeping law.

On Jan. 31, Alex M. Azar II, the secretary of Health and Human Services, determined that an emergency existed under the Public Health Service Act. The determination made it easier for state and local health departments to temporarily reassign personnel whose salaries were funded through federal public health programs, freeing them from regular duties to help respond to the pandemic.

Mr. Trump’s move will also unlock extra powers under Section 1135 of the Social Security Act aimed at making it easier to get medical supplies and doctors and nurses where they are needed most.

The provision permits waiving requirements in Medicare, Medicaid and the Children’s Health Insurance Program that normally apply. The waivers include payment limitations on using out-of-network providers, certain certification requirements and a federal mandate that doctors be licensed in the state in which they are practicing.

At his news conference, Mr. Trump gave an example of “telehealth,” or letting doctors in one state consult online with patients in another state.

The waiver power under the Social Security Act requires both a determination under the Public Health Service Act by the health and human services secretary and a presidential declaration under either the Stafford Act or the National Emergencies Act.

In 2009, President Barack Obama declared a national emergency — under the latter law rather than using the Stafford Act — in part to unlock Section 1135 powers as part of the government’s response to the H1N1 epidemic, also known as the swine flu.

Yes, at least as a matter of policy substance and politics.

Serious commentators agree that the coronavirus pandemic presents a true emergency and fits within the intent of Congress in creating national emergency powers laws. But Mr. Trump’s claim that an emergency existed at the border that could be solved by a wall was widely disputed.

Mr. Trump’s coronavirus emergency declaration, in contrast to his Mexico border wall declaration, fit the purpose of emergency powers laws, said Elizabeth Goitein, a co-director of the Liberty and National Security Program at the Brennan Center for Justice at the New York University School of Law. She oversaw a study in 2018 of presidential emergency powers.

“In contrast to the situation at the border wall, which was in no way an emergency and the president’s declaration went against Congress’s will,” she said, “this is a situation where we face a true emergency and members of Congress have actually been encouraging the president to take this action.”

    • What is a coronavirus?
      It is a novel virus named for the crownlike spikes that protrude from its surface. The coronavirus can infect both animals and people and can cause a range of respiratory illnesses from the common cold to lung lesions and pneumonia.
    • How contagious is the virus?
      It seems to spread very easily from person to person, especially in homes, hospitals and other confined spaces. The pathogen can travel through the air, enveloped in tiny respiratory droplets that are produced when a sick person breathes, talks, coughs or sneezes.
    • Where has the virus spread?
      The virus, which originated in Wuhan, China, has sickened more than 152,000 in at least 125 countries and more than 5,700 have died. The spread has slowed in China but is gaining speed in Europe and the United States. World Health Organization officials said the outbreak qualifies as a pandemic.
    • What symptoms should I look out for?
      Symptoms, which can take between two to 14 days to appear, include fever, a dry cough, fatigue and difficulty breathing or shortness of breath. Milder cases may resemble the flu or a bad cold, but people may be able to pass on the virus even before they develop symptoms.
    • What if I’m traveling?
      The State Department has issued a global Level 3 health advisory telling United States citizens to “reconsider travel” to all countries because of the worldwide effects of the coronavirus. This is the department’s second-highest advisory.
    • How long will it take to develop a treatment or vaccine?
      Several drugs are being tested, and some initial findings are expected soon. A vaccine to stop the spread is still at least a year away.