Well I may be wrong but some quick napkin math tells me there can be up to 3 returning world champs per weight (one UWW weight below, oly weight, up a UWW weight).
Weights with defending champs, oly weight listed first. Cut down in bold and bump up italicized
On paper, the toughest weight and only with three defending champs was WFS 68kg and we saw what the wrecking ball known as Amit Elor did to that bracket. Overall, only three brackets have multiple defending champs and two do not have a defending champ (both MFS).
So as of today, out of 5 champs across 9 weights (excluding Elor obviously) the US has drawn into 4 defending. 45% of matches were against the best in the business right off the bat. If that's not the textbook definition of "tough draw" then I don't know what is, short of being Elor and being literally the best in the world yourself.
MFS
57 Micic (57, withdrew)
65 Musukaev (65), Retherford (70)
74 None
86 None
97 Tazhudinov (97)
125 Zare (125)
WFS
50 Susaki (50)
53 Fujinami (53)
57 Sakurai (57)
62 Tynybekova (62)
68 Tosun (68), Ozaki (65), Elor (72)
76 Kagami
GR
60 Sharshenbekov (60)
67 Orta (67)
77 Makhmudov (77)
87 Cengeiz and Losonczi (87 double champs), Huseynov (82)
97 Rosillo (97)
130 Mirzazadeh