I don't feel that Romney specifically went out of his way to hamper the Red Cross relief efforts, but I do know that the Red Cross was specifically asking - before he started his relief rally, during the rally, and after the rally - that people not donate goods, which they didn't have the distribution channels set up for at that point, and instead donate money. That being said, people love canned food/clothing/etc. drives, because they feel like they're really helping out, and because it lets them get rid of stuff that they already have around the house, in a lot of cases. The amount of cans and boxes of food I collected during my scouting career, and the amount of clothing we were always able to round up whenever my (former) gaming org used to hold clothing drives are proof enough of that. I can't honestly say that I'm the least bit upset that Romney's campaign allowed people not affected by the storm to feel like they were doing something to help those that were. And besides, the Red Cross is a massive organization, with enough employees and volunteers that I'm sure they had some group of people who could unload a truck full of donations; and even if they couldn't use them right that moment, there'll come a time when they can, or they'll get them to someone else who can use them.