I feel icky agreeing with Ransath but he's actually right in this case. The question isn't about Due Process being applied to aliens, it is and isn't questioned in this case. It's whether it's being denied by not having government paid for counsel. This other case gives 3 tests that are applied to determine if Due Process was denied:
Mathews v. Eldridge. It was determined in this case the 3 tests didn't favor the minor, but instead the government, and so not having
government paid for counsel didn't deny him due process.