couponing in the states

I'm trying to coupon, and i'm wanting to coupon in the states just makes sence that it's just a quick zip over there

I have some questions so any one who has any advice and could help that would be fantastic

1. do you know which grocery store has the best prices
2. do you know of any web sites that match the store sales with on line coupons i could either order or print or both
3. Have you had any problems with the border


thanks any help would be lovley

Check this other thread out for info on crossborder shopping:

http://forum.smartcanucks.ca/192845-...-deals-canada/