We haven't been able to identify the plant.  Although it strongly resembles ginseng (Panax quinquefolius)  and sarasparilla (Aralia nudicaulis), several characteristics seem to rule out these species.

The photo lacks resolution needed to view some of the plant's attributes.  We presume this is the only photo you have.  If you have more, including sharp closeups, it might help to reply to this message and attach them.  Also tell us more about when and where you saw this plant.  With more information we may be able to identify it.

After further consideration and some help from folks at the Minnesota Wildflowers website, we have decided that the plant in the photo is a kind of Rogersia.  We don't know what species.

Although most authorities rate Rogersia hardy only to zones 5 and warmer, a few claim it survives in Zone 4 and even 3.

In any case, it's a non-native garden escape that has apparently naturalized in parts of eastern and central USA.