An appellate panel grilled lawyers about why courts should be able to “second-guess” the president’s deportations in defending the country amid armed conflicts.

By Jan WolfeWASHINGTON (Reuters) -A federal appeals court will hear oral arguments on Monday in what is likely to be a decisive lawsuit over whether President Donald Trump's administration can use an 18th-century law to speed up deportations.

At issue is Trump’s invocation of the 18th-century law in March to remove noncitizens labeled as members of the Venezuelan gang Tren de Aragua. In his order, Trump proclaimed Tren de Aragua members were “perpetrating,