Zgro vs Vgro?

Currently invested in VGRO in both my rrsp and tfsa.

With the trade war starting im considering switching from VGRO to Z(ed)GRO.

My thoughts process is to support a Canandian institution (BMO) compared to American (Vanguard)

Is my line of thinking correct? Would there be any negative implications? To me the products seems similar enough that it really doesn't make a difference. Just my MER goes to a Canandian company vs an American one