Most margarine has trans fats. Is there a non trans fat vegetable shortening to use for pie crusts?

You can make a great pie crust using Crisco - The Cooks Illustrated pie crust with a touch of vodka. Great crust every time.

http://www.seriouseats.com/recipes/2007/11/cooks-illustrated-foolproof-pie-dough-recipe.html

I've never baked with either of these, so I can't attest to their quality, but Spectrum shortening doesn't have trans fats, and as of 2007, Crisco dropped trans fats in their shortening as well.