SEATTLE — President Trump’s revised travel ban will be scrutinized in federal courtrooms across the country Wednesday – the day before it is supposed to go into effect.

Seven states are trying to derail the executive order affecting travelers from six Muslim-majority nations.

Hawaii’s lawsuit is heading to federal court in Honolulu, while Washington state, which successfully sued to block the original ban, wants its own hearing before a federal judge in Seattle. Five other states have joined Washington’s challenge.

In Maryland, a U.S. judge will hear arguments from the American Civil Liberties Union and others who want to stop the new order.

Here’s a look at what’s going on:

Hawaii will argue that the new order will harm its Muslim population, tourism and foreign students. Ismail Elshikh, a plaintiff in the lawsuit, said the ban will prevent his Syrian mother-in-law from visiting.

The federal government will argue that the allegations are pure speculation. Justice Department lawyers also say the president is authorized to restrict or suspend entry into the United States.

In Washington state, Attorney General Bob Ferguson is pushing for a hearing before Judge James Robart, who halted the original ban last month. Ferguson wants Robart, who has not yet scheduled a hearing, to apply the ruling to the new ban.

Ferguson says the new order is unconstitutional and harms residents, universities and businesses, especially tech companies such as Washington state-based Microsoft and Amazon who rely on foreign workers. California, Maryland, Massachusetts, New York and Oregon have joined the claim.

Immigrant advocacy groups and the ACLU are suing in Maryland. They will ask a judge there early Wednesday to issue an injunction, saying it’s illegal to reduce the number of refugees in the middle of a fiscal year. The ACLU expects a ruling on that part of the case even if other aspects of the ban are blocked.