美國西北航空行李寄艙問題＜急＞

check baggage for HK to US maximum of 50 pounds (23 kg) and a total linear dimension of 62 inches (158 cm) per piece at no charge
For domestic and trans-Atlantic travel, the maximum weight accepted for any piece of checked luggage, including special luggage items, is 70 pounds. For trans-Pacific travel, the maximum weight accepted for any piece of checked luggage is 100 pounds.

regardless of citizen or not, you are allowed to carry 2 pieces of luggage to USA/CANADA on any airlines....each piece no more than 32K
G.

2008-04-01 18:33:37 補充：
please visit http://www.nwa.com/travel/luggage/checked.html#freeluggage for more details.