That isnt going anywhere
he is also confused by another matter

in violation of the proper balance between state and federal sovereignty.

he also missed tribal sovreignty which is the third part of the tripod. Since your clip didnt examine a lot of what was happening so I took a quick look.

Oh the feds had a brief as well as other folks
https://www.washingtonpost.com/news/morning-mix/wp/2018/10/10/court-strikes-down-native-american-adoption-law-saying-it-discriminates-against-non-native-americans/?utm_term=.726bb6ce5c7d

As the federal government noted in its brief, the Supreme Court has upheld laws providing “special treatment” of Indians as long as the laws are specifically tethered to “Congress’s unique obligation toward the Indians.”

The high court has in the past rejected claims that such special treatment is based on race, the government noted in its brief. Instead, the court has agreed with the federal government that the “special treatment” is instead “rooted in the unique status of Indians as ‘a separate people’ with their own political institutions,” as the court held in a 1977 case involving the Major Crimes Act.

plenty of valid precedent, that law isnt going anywhere.