The travel ban, which the Supreme Court allowed to take effect in December, has been widely criticised by refugee and human rights groups. Yes, a man they thought unsafe and demagogic was in the White House but the other branches of government - Congress and the courts - were providing an effective brake on executive power.
While the news of Justice Anthony Kennedy's retirement is not entirely unexpected, it still comes as a thunderclap.
"Justice Kennedy is a most dedicated public servant, having served on the High Court for over thirty years", Leonard Leo, Outside Advisor to the President for Judicial Nominations, said. We want to keep our journalism open and accessible and be able to keep providing you with news and analyses from the frontlines of Israel, the Middle East and the Jewish World.
He was often referred to as the "swing vote" between the four more liberal and four more reliably conservative justices now presiding over the court.More news: Lakers "Racing" To Acquire Kawhi Leonard Before Friday
Writing in dissent, Justice Sonia Sotomayor said, "a reasonable observer would conclude that the Proclamation was motivated by anti-Muslim animus".
Trump's first court appointee, Neil Gorsuch, is an ardent conservative in the styleof the man he replaced, Antonin Scalia.
Chief Justice John Roberts wrote the majority opinion, saying that presidents have substantial power to regulate immigration.
The vacancy on the bench that the Ronald Reagan-appointed justice leaves behind will give Trump his second opportunity to nominate a Supreme Court justice.
The ban prohibits most people from Iran, Libya, Somalia, Syria and Yemen from entering the US.More news: Belgium's De Bruyne set to miss 'celebration' England clash
"I look forward to meeting with and evaluating the qualifications of whoever President Trump nominates to become a justice on the Supreme Court", Manchin said in a statement.
Trump already has a list of 25 candidates - 24 judges and Utah Senator Mike Lee - from which the White House has previously said he would choose a nominee.
"The Supreme Court has upheld a ban driven by anti-Muslim sentiment", said Jasmin Samy, the council's state executive director. Id., at 132-133. He added: "That's right, we need a TRAVEL BAN for certain unsafe countries, not some politically correct term that won't help us protect our people!"
Although he leaned conservative in his rulings, Kennedy was thought to be the Court's swing vote.
Prominent on the list of possible successors are Judges Thomas Hardiman of Pennsylvania and William Pryor of Alabama, who were seriously considered for the seat eventually filled by Gorsuch, and Judge Brett Kavanaugh, who serves on the federal appeals court in Washington.More news: Messi 'not guilty of anything', insists Maradona