Yes, some pure veg indians in US came out that Mcdonalds
was using beef tallow for french fries, but as not US Mcdonalds has given in bold letters that they are non-veg
joint, (correct me if I am wrong) so veg people should avoid going to such joint to eat french fries, they can have same at any South Indian joint where this fries are served. As far as, Mcdonalds in India, they have given specifically that they do not serve beef and all items are of Chicken and yes they do serve veg burgers, aloo tikka for veg. and use vegetable oil for french fries. So Mcdonalds go as per the countries which they are located in and serve as per local requirements. I highly recommend this joint, as they are clean, food are of good quality and hygienically prepared, better than any Indian restaurant where if you see their kitchen, you will never dare to eat there.
Mcdonalds, keep it up and do put up board in your US joint about your preparations so that Pure Veg. people keep out of it.