https://nationalinterest.org/blog/buzz/should-navy-fear-chinas-new-missile-destroyer-30717
So the short answer to the question “does the United States need to respond to the Type 055” is “no, not in the medium term.” The longer answer is that the U.S. Navy needs to figure out its procurement and shipbuilding policies soon in order to credibly approach design of the next big surface combatant.