Twelve US state attorney generals and one governor have backed Donald Trump's revised travel ban targeting six predominantly Muslim countries, telling a federal appeals court that he acted lawfully in the interest of national security.
The states are urging the 4th US Circuit Court of Appeals to overturn a lower court judge's ruling that blocked part of the president's revised executive order.
The states say the administration's action is not a "pretext for religious discrimination" and does not violate the constitution.
"The executive order's temporary pause in entry by nationals from six countries and in the refugee programme neither mentions any religion nor depends on whether affected aliens are Muslim," the states wrote in the brief with the court based in Richmond, Virginia. "Thus, the executive order is emphatically not a 'Muslim Ban'."
The states are Alabama, Arizona, Arkansas, Florida, Kansas, Louisiana, Montana, Oklahoma, South Carolina, South Dakota, Texas and West Virginia, with governor Phil Bryant of Mississippi.
The appeal stems from a ruling from a federal judge in Maryland earlier this month. That ruling and a separate one in Hawaii were victories for civil liberties groups and advocates for immigrants and refugees, who argued that Mr Trump's temporary ban on travel from six predominantly Muslim countries violated the constitution.
The Trump administration argued that the revised executive order, which includes a temporary ban on refugees and a cap on the number who can enter the country, was intended to protect the US from terrorism.
Citizens from Iran, Libya, Somalia, Sudan, Syria and Yemen are temporarily barred from entering the country under the order, although there are exceptions.
The 4th Circuit Court has set oral arguments in the Maryland case for May 8.
The administration urged the court in a brief also filed on Monday to put the lower court ruling on hold and let the executive order take effect while its appeal is pending.
Lawyers for Mr Trump said the people named in the case have not shown they will suffer "substantial harm" and the nationwide injunction blocking the ban is "fatally overbroad".
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