Yes of course. Basically they have ruled the entire warrant requirement for searches and prohibition on unreasonable searches and seizures is suspended within 100 miles of any border or international airport (which is most of the US).
It's 100 miles of land & sea borders. Plus the airport zone. The airport does not create a new 100 mile zone.
For example, ATL is not within 100 miles of a sea or land border, so the CBP zone is just the airport, not the 100 mile circle around the airport. But, ORD and LGA are both within 100 mile zones.
Of course, it's all kind of a moot point, as the current administration seems happy enough to deploy immigration forces nationwide and Congress is spineless and incapable of pushing back.
DC also, because of proximity to the Chesapeake Bay. Austin TX within 100 of the Gulf of Mexico. And on and on.
As noted in a sibling, the 100 mile zone captures about 2/3 of the population.
Is the search limited to the phone itself and the data physically residing inside or can they open any door for which that phone is the key?