I know about the restictions over here in airports (ie water limit, have to taste it , better to buy otherside) but are there any limits/caveats on what you can take into the Us when you fly? we get tehre fairly late in the day and I'd like to take a little food/milk for dd to avoid having to hunt out something the minute we arrive. IS this going to cause a problem (I was thinking about pre packaged stuff as I know they won't let you bring in fruit/veg)?