Sure, there are people in America who like international football. They fall into 4 groups:
Immigrants
Tourists
Americans who hate the USA and vow to leave whenever elections don't go their way, but then puss out and pretend to enjoy soccer as goth cosplay rebellion
UK soccer people on Twitter like "Americans just don't get it, oi? All their soulless corporate stadiums with indoor plumbing will never have the aura of 8,000 packing the terraces of Old Shittingdon for a nil-nil match, slipping on each other's vomit and singing Georgie Girl"