The language is a bit misleading. It's not a partisan amendment per say. In theory, any republican or democrat president could do the same if they met the criteria. It's obviously designed to benefit Trump as currently he is the only person alive who meets this criteria. However, it's not excluding democrats only as Bush also wouldn't meet the criteria.
Also, obviously, democrats won't vote for it, but it's not an anti-democrat move, it's an anti-anyone but Trump move.
