Which soy products are grown sustainably and are ethically sourced?

I have recently become a vegetarian for combined ethics, environmental, and health reasons. I understand that many soy products actually contribute to the destruction of the rainforests as food companies clear rainforest land to make room for more and more soy fields. I would be very grateful for any input on which soy foods/brands are NOT sourced from these rainforest areas. I would like to purchase foods that are ethically harvested. Does anyone know where the soy comes from in most of our vegetarian products like soy milks, soy based meat substitutes like soy sausage, "beef," etc.? Which products/brands are confirmed as ethically sourced? Thank you very much for your response in advance.