Sadly, it’s too late to get started on voter ID. This had to begin his 1st day in office to have any shot at being in place in 2020. That being said, some activist judge in Hawaii probably would have squashed it, and Roberts would have cast the vote that would have delayed it until 2020 implementation was impossible anyway.
You’re probably right re Voter ID. Sadly...
Many states have voter ID, but of course, the big states with large illegal immigrant populations are conspicuous among those with no ID of any type required. But the courts have upheld many voter ID laws.
https://ballotpedia.org/Voter_identification_laws_by_state