Part of the challenge of understanding the expansion is the lack of specificity in the bill language. Since the governor already has expansive emergency powers, adding more could theoretically justify all kinds of maneuvers, like the declaration of martial law, unilateral travel restrictions, and mass quarantines.
“We don’t fully understand the implications of the new powers versus the old ones.”
Source: Albany’s Dead-Of-Night Coronavirus Vote Gives Cuomo Sweeping New Emergency Powers – Gothamist