In US, a appeals court is weighing arguments for and against President Donald Trump's temporary travel ban, but its decision this week may not yet answer the underlying legal questions being raised in the fast-moving case.<br/><br/>The 9th US Circuit Court of Appeals in San Francisco is expected to rule only on the narrow question of whether a lower court's emergency halt to an executive order by Trump was justified. The appeals court has several options. It could kick the case back to lower court judge James Robart in Seattle, saying it is premature for them to make a ruling before he has had a chance to consider all the evidence. Robart stopped Trump's order just a week after he issued it and before all the arguments had been developed on both sides.<br/><br/>Or the panel of three appellate judges could side with the government and find halting the order was harmful to national security, reinstating it while the case continues. The broad questions in the case are whether the States have the right to challenge federal immigration laws, How much power the court has to question the President's national security decisions, and if the order discriminates against Muslims.