I don't agree with the current checklist for this set, but understand why people may have thought it would go that way. I don't have the permission level to fix it, but noticed this old forum discussing the same topic.
GPK began a new numbering system in 2015 with their "30th Anniversary" themed series, which included 220-total cards divided into 12 subsets that each began with a #1/b. That new numbering system continued in 2016 with the "American as Apple Pie in your Face" themed series, which also included 220-total cards, but divided into only 9 subsets that each began with #1a/b.
This new numbering system has continued with subsequent releases "Prime Slime Trashy TV" in 10/2016 and "Adam-geddon" in 1/2017. I wrote the checklists for both of those, and believe that the "American as Apple Pie in your Face" checklist should resemble those two checklists.
The total number of cards in the base set should be 220 (not 84), which would match the size of the GPK released just prior (30th Anniversary in 7/2015), and the GPK set released just after (Prime Slime Trashy TV in 10/2016). Cards that are currently being listed as insert sets should actually be listed in the base set.
The 9 subsets that combine to form the complete 220-card set in the "American as Apple Pie in your Face" release, in order, should be:
*American as Apple Pie #1-a/b to #42-a/b
*Americana Swept under the Rug #1-a/b to #9-a/b
*Americana Devolved #1-a/b to #9-a/b
*2016 Presidential Candidates #1-a/b to #5-a/b
*American Icons #1-a/b to #9-a/b
*American Inventors #1-a/b to #9-a/b
*U.S. Historical Event #1-a/b to #9-a/b
*America's Pasttimes #1-a/b to #9-a/b
*2016 U.S. Summer Olym-Picks #1-a/b to #9-a/b
None of these subset should be considered inserts as they currently are. Your set is not complete without these cards. There are other inserts that are part of this set, but these are not it. I have informed admin about this.