President Trump launched a tweet storm this morning and over the weekend calling for the courts to allow him to impose his Muslim travel ban, which would prohibit all refugees and citizens of six majority-Muslim countries from entering the United States.

On Saturday, Trump tweeted, “We need to be smart, vigilant and tough. We need the courts to give us back our rights. We need the Travel Ban as an extra level of safety!” This morning Trump tweeted, “People, the lawyers and the courts can call it whatever they want, but I am calling it what we need and what it is, a TRAVEL BAN!”

The Trump administration has filed emergency applications with the nine high court justices seeking to block two different lower court rulings that found the ban was discriminatory.

“There is no national security justification that the government has managed to produce here,” says Shayana Kadidal, senior managing attorney at the Center for Constitutional Rights.