yes.
i will give you an example from Minnesota.
many years back it came to the attention of the
politicians out of state contractors were low balling
estimates in order to win contracts with the state.
primarily in road construction and or repair.
these company's primarily from down south would
bring in their own crews. the problem lied in the
fact that their wages and benefits were substantially
lower than the prevailing wages and benefits being
paid to in state workers. they could low ball any
in state contractor and actually make more profit.
the state stepped in and required licensing for
for any contractor. their rationale was the out of state
workers pay was cheating the state out of tax revenue
and undermining the employment prospects of workers
who lived in the state and worked for in state companies.
they are now required to pay their workers at a rate
the state determines is equitable.
as another example which applies to out of state
companies who's product is purchased out of state
is the office supply industry. back before the computer
revolution in business and home took place prior to
the early 80's or so a lot of the paper work was done
manually. out of state suppliers were low balling
the contracts for the states purchase of office supplies.
for the same reasons the state required licensing even
though the companies were completely out of state
and had no physical presence in the state.
in the terms of e-supplies the state is simply saying
their tax base is being eroded undermining the financial
well being of the states citizens and also to protect the
health and safety of its residents.
what does this mean as far as the inter state commerce
clause. nothing. the state is not restricting inter state
commerce because every one in state and out of state
are playing by the same rules. the level playing field.
please note that e-cigarettes are considered tobacco
products and as such it gives the state even more
power in terms of licensing and regulation.

regards
mike