That's because many Americans are against national ID at all cost for some reason. The very same Americans think that immigrants need to have their "I'm legal" folder with them at all times.
Blatant strawman. I'm a concrete counterexample if you insist on having one. The federal government should not have any involvement in routine photo ID. If that makes certain things difficult I see that as a feature, not a bug.
What are the practical benefits we're supposed to get from the RealID system? All I've ever heard is "national security" which is the excuse for every harmful thing.