Originally Posted by
capljina614
I've done some reading and I guess there are two rules, the majority rule and then another rule saying your flight ends or begins in the USA then the baggage rules from the origin carrier take effect
To be precise, it is not the origin carrier, but the marketing carrier of the first segment. In this case, that appears to be JU. Thus, the JU allowance will apply to all segments of the ticket out to CMH and back (if there is a return booked on the ticket).