Yes, it is possible to tour in the USA for vaccinated travelers from
accepted countries and there are also some exceptions. However, there are
restrictions in some states and there are requirements to provide proof of
vaccination status and other documents if required. Before traveling to the
US, you should check the US entry requirements to ensure you meet the criteria
and have the required documents. If you want to tour around different states
in the US, there may be different restrictions in each one. You should check
what the latest entry requirements are for the US and for re-entering your
country as they are regularly reviewed to adapt to the risk of new COVID
variants.