Four months after threatening he would take his immigration travel ban all the way to the Supreme Courty, Trump's administration did just that on Thursday night when it asked SCOTUS to revive his plan to temporarily ban travelers from six Muslim-majority nations after it was blocked by lower courts that found it was discriminatory.

"We have asked the Supreme Court to hear this important case and are confident that President Trump's executive order is well within his lawful authority to keep the nation safe and protect our communities from terrorism," Justice Department spokeswoman Sarah Isgur Flores said in a statement.

The American Civil Liberties Union, one of the legal groups challenging the ban, tweeted in response: "We've beat this hateful ban and are ready to do it again."

The administration filed emergency applications with the nine high court justices seeking to block two different lower court rulings that went against Trump's March 6 order barring entry for people from Iran, Libya, Somalia, Sudan, Syria and Yemen for 90 days while the U.S. government implements stricter visa screening, Reuters reported. The move came after the Richmond, Virginia-based 4th U.S. Circuit Court of Appeals on May 25 upheld a Maryland judge's ruling blocking the order. The administration also filed a separate appeal in that case.

Among other considerations, the nine supreme court justices are set to weigh whether Trump's harsh election campaign rhetoric can be used as evidence that the order was intended to discriminate against Muslims. Previously, the government had argued that the court should not take into account Trump's comments during the 2016 U.S. presidential race since he made them before he took office on Jan. 20. But the appeals court rejected that view, saying they shed light on the motivations behind Trump's order.

The SCOTUS decision will also be a test of the ideological sway of Trump's recent conservative bench appointee, Neil Gorsuch. At least five votes are needed on the nine-justice court in order to grant a stay. The court has a 5-4 conservative majority, with Justice Anthony Kennedy - a conservative who sometimes sides with the court's four liberals - the frequent swing vote. If the government's emergency requests are granted, the ban would go into effect immediately.

Some more details from Reuters:

The court first has to act on whether to grant the emergency applications, which could happen within a fortnight. Then, the justices will decide whether to hear the government's full appeal. The Supreme Court is not required to hear the case but is likely to due to its importance and the fact that the request is being made by the U.S. government.

The Justice Department has asked the court to expedite the case so that the justices could hear it at the beginning of their next term, which starts in October. That means, if the court allows the ban to go into effect, the final decision would be issued long after the 90 days has elapsed.