Having crossed at least 4 times on our trip through Alaska and back I can say that meat was never an issue. Nor was any dog food. In fact, the only time the dog's papers were checked was going into Alaska the second time. Usually they handed them back after saying what is this? Firearms, firewood, fireworks seemed to be the biggies. Sometimes fresh fruit. The only time the rig was looked into was when we came back in thru North Dakota, the customs guy walked in, opened the fridge, walked out. Could not see much anyway with slides in, would not use Sumas anyway as we had heard that was a tough one. Nan