The correct answer to this open question is the following.
I choose to be a business owner in the 1920s.
My letter would be this.
Dear Sir,
As a hard-working American citizen, I would like to ask you to reconsider the idea to impose new taxes on goods on American businesses.
As you know, we are living an economic reactivation in this time that has been given a proper name: "the roaring 1920s."
People are buying. They are using credit, but it is good for American businesses. We are hiring more people, creating jobs in the country. Consumers feel content with the quality products they are buying. SO everybody is winning.
It is not a good time for more taxation.
Let us continue with the creation of jobs, investing in the economy of our country.
Thank you very much for your attention.
Sincerely yours,