If travelling with children who are not a part of your immediate family, have a note or proof that the child has permission to cross the border with you.
Turn off radios and cell phones when talking to border agents.
Declare all fruits, vegetables and plant products, animals, birds, eggs, meat and meat products.
Declare all items acquired for personal use.
Resident aliens must carry residency cards at all times.
Don’t fool around. Customs and Immigration agents on both sides of the border are law enforcement officials who take their duties very seriously. Approach inspection booths slowly and follow signage instructions.