It’s possible someone could confuse Bishop’s Goutweed with deadly poison hemlock. Hemlock is much taller, often has a powdery bloom, often has reddish stems, and twice or three times compound leaves that appear more fern-like.
Bishop’s Goutweed is invasive to the northeast and can easily be harvested in quantity. It can be found along roadsides, river banks, and the edges of yards. It will often create a dense understory. It makes a nice pot herb, but my favorite use of it is to create a soup broth. The flavor is somewhat herbal as opposed to more standard grocery store vegetables.