It's not only happening here in the USA. Philippine Airlines has this new policy of limiting a passenger's baggage on trips bound to North America. This is all because of the rising fuel price.
Excerpt from the news...
Philippine Airlines will limit free check-in baggage to 50 pounds (23 kilograms) per person on its North American service as it battles to keep costs down amid rising fuel prices, the airline said Monday.
The weight cap will take place from July 1, it said. At present passengers are allowed 70 pounds for free.
"Record-high fuel prices have forced PAL to follow the lead of most major carriers in reducing baggage allowance on trans-Pacific routes, as a way of cutting operational cost," the airline said.source