The American Civil Liberties Union (ACLU) on Tuesday slammed a Supreme Court ruling that upheld President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's travel ban, saying that history will judge the decision harshly.

"BREAKING: SCOTUS has upheld Trump’s Muslim ban," the ACLU tweeted. "This is not the first time the Court has been wrong, or has allowed official racism and xenophobia to continue rather than standing up to it. History has its eyes on us — and will judge today’s decision harshly. # NoMuslimBanEver"

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The ACLU added that the Supreme Court allowed the U.S. to "imprison Japanese Americans solely because of their national origin and ethnicity, based on empty claims of national security."

"It’s one of the most shameful chapters of US history, and today’s decision now joins it," ACLU said.

In 1944, the Supreme Court allowed the US government to imprison Japanese Americans solely because of their national origin and ethnicity, based on empty claims of national security.



It’s one of the most shameful chapters of US history, and today’s decision now joins it. — ACLU (@ACLU) June 26, 2018

The court on Tuesday upheld Trump's travel ban, which restricts travel to the U.S. from five Muslim-majority countries: Iran, Libya, Syria, Somalia and Yemen.

The ACLU had strongly condemned Trump's executive order, and in September of 2017 said that the policy, while updated, was still a "Muslim ban at its core."

"It certainly engages in discrimination based on national origin, which is unlawful," ACLU Executive Director Anthony Romero said at the time.