The 9th Circuit Court of Appeals will hear oral arguments in the challenge to President Donald Trump's executive order on immigration on Tuesday evening at 6 pm ET, a report said.

The hour-long hearing, conducted by telephone among three West coast judges will determine the immediate fate of the nationwide temporary restraining order against Trump's travel ban, CNN reported.

Trump has only been in office for 17 days, but his Justice Department is already embroiled in a high-stakes legal battle that could affect hundreds of thousands of people and the direction of his presidency, it added.

The temporary restraining order should remain in place because the President had "unleashed chaos" by signing the order, attorneys general for Washington and Minnesota, which challenged the executive order were quoted as saying in the report.

The focus for the courts t is not whether or not Trump's travel ban is constitutional, but whether it will remain suspended for now. No matter what the San Francisco rules, the next stop will likely be the US Supreme Court.

The executive order issued on January 27 with little explanation or advance warning bars citizens of seven Muslim-majority countries -- Iraq, Syria, Iran, Libya, Somalia, Sudan and Yemen -- from entering the US for 90 days, all refugees for 120 days and indefinitely halts refugees from Syria.