Nativism in Advertising?

The point of this ad seems to be that the Mason Office Supplies company is based on good old American values ( seems like Protestant ethic personified)--think it is also a little tongue in cheek.
Have seen some other companies, like one called Fitch, that take the same approach.

Reminds me of the joke about Franklin Roosevelt addressing a group of women from the Daughters of the American Revolution,
"Fellow Immigrants!!" he started off...

Let me see what Mason says about itself on internet--let, it is pretty much along the lines of celebrating free enterprise in America:

Since 1898, the dedicated people at W.B. Mason have been passionate about bringing their amazingly low prices, superior delivery and outstanding personal service to businesses of all sizes for all of their office products needs. From our humble beginnings in a small warehouse in Brockton, MA, we have grown to become the largest, privately owned office products dealer in the United States, with over 30 locations spanning 11 states. We have everything you need for your office, from supplies and furniture, to break room and janitorial goods. Let us be your one source for all of your office needs. One Source...Wonderful!
Our Mission Statement: We are an organization focused on solving customer problems with personalized services and customized solutions. We take the long view on strategies that require extended periods to develop, and we are flexible to meet customers' ever changing needs. Our objective is to provide the best overall solution.