As global COVID-19 infections near 2.5 million, President Donald Trump announced on Monday that he plans to sign an executive order to temporarily ban immigration into the US amid the spread of COVID-19.

“In light of the attack from the Invisible Enemy, as well as the need to protect the jobs of our GREAT American Citizens, I will be signing an Executive Order to temporarily suspend immigration into the United States!” Trump tweeted.

Additional details of the order have not been specified, including when the order would go into effect. Trump did not specify whether there would be any exceptions.

On March 31, the US State Department issued a worldwide Level 4 travel advisory, which cut off travel between the US and the rest of the world. US land borders with Mexico and Canada remain open for essential purposes only, such as cargo and those traveling for business and emergency purposes.

The decision comes just as Trump is working with governors across the country to start the process to reopen state economies.