A federal appeals court has largely upheld the nationwide block of President Donald Trump’s executive order restricting travel from several predominantly Muslim countries.

The ruling came from the 4th Circuit Court of Appeals.

It upholds the suspension of a revised version of the executive order that the Trump administration crafted to better hold up to legal scrutiny than an earlier version.

Trump has insisted that the measure is necessary to prevent possible terrorist attacks. But courts in previous rulings blocking its enforcement have cited past statements from Trump and his advisors signaling that it may single out Muslims.