It's easy to give a $25 voucher when you charge them $25 for a bag in the first place...

U.S. checked baggage fees

New checked baggage fees are being introduced for all one-way travel between the U.S. and Canada. This scale is now $25 for the first bag, $35 for the second bag, and $100 for the third bag and each subsequent bag, which is comparable to other airlines.