Yes, you must declare it when entering the US. Review the list at the link below.
https://help.cbp.gov/app/answers/det...r-personal-use
You must declare all food products. Failure to declare food products can result in up to $10,000 in fines and penalties.
The following are generally admissible:
-Noodles and ramen that do not have meat or eggs in the spice packets
Similarly, Canada says you must declare.
http://www.inspection.gc.ca/food/inf.../1389648516990
Travellers are required, by law, to declare all plant, animal, and food items they bring into Canada.
Products allowed into Canada from countries other than the United States
Baked goods, candies, etc.
- no goods containing meat
- up to 20 kilograms per person
EDIT: They do sell a very wide variety of instant noodles in the US and Canada, you know
