From Bloomberg :
An increasing reliance on emergency declarations may eventually push Congress to act to take back some of its power, according to James Wallner, a senior fellow at R Street and a former legislative director to Senator Pat Toomey, a Republican and free trade advocate.
“At some point, words do lose their meaning and when that happens, these loopholes become dangerous,” Wallner said. “Congress complains but it does nothing. It gave this power away and it can take it back at any point.”
- “Bloomberg”: https://www.bloomberg.com/news/articles/2019-05-31/trump-barrels-into-uncharted-territory-with-tariffs-as-weapon