You can not say your a Licensed Engineer in 27 states if you are not
personally licensed in each state.

That would be in those states which actually have a license procedure
for being an engineer - which are few.

Later,

Tom

As far as I know, every state has a requirement that you have your P.E. to
be able to call yourself a "licensed engineer", "professional engineer"
"consulting engineer", or offer engineering services to the public.