In what ways have presidents perfected the art of what social scientist samuel kernell calls “going public? ”

The ways that presidents have perfected the art of what social scientist samuel kernell calls “going public" are:
- Special televised messages
- holding town meeting (to hear problems directly from the people)
- interviews and press conferences with the media (to give broader information for the public)
-annual State of the Union address

What are the statements?

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.