READ EVERY LABEL.
Run, don't walk, away from any food products from China.
Be particularly watchful at the dollar stores.
Products, both merchandise and food, can be labeled made in USA even if the raw ingredients are brought in from foreign lanzar, then assembled here. So, anything that has a combination of ingredients, email the company and ask where they source their component materials.
If there is no email address on a package, there is usually a toll free number listed. Call the toll-free number and ask for their email address. It is very important you get their answer in writing. It is far too easy for a customer service person (who may respond to your question even if they don't know the right answer) to give you an inaccurate verbal reply. They are much less likely to answer incorrectly on paper.