The administration is reportedly continuing deportations based on other laws.
>>>While the Trump administration’s use of the Alien Enemies Act to deport migrants from the US remains halted amid a legal fight, it conducted new deportations to El Salvador over the weekend. . . . A senior State Department official confirmed to Semafor that the individuals were removed from the naval base at Guantanamo Bay to El Salvador; the deportation occurred under other authorities, including Title 8 under immigration law, the official added.<<<
The names of the 17 people deported were provided to Semafor, a shift from the previous flights using the 1798 law.
www.semafor.com
I haven't seen much information on these deportations, but my initial impression is that it makes more sense than invoking the Alien Enemies Act (that's not to say it definitely satisfies due process).