What are these principles of Taxation, and how are they still being used today?

Political Economy
What are these principles of Taxation, and how are they still being used today?
America’s Financial Report Card – how did we do?
Understanding the US Credit Rating downgrade, and the historical significance.
Government Financial Literacy defined, the taxonomy of a Civic responsibility.
National Debt: What is it? Is it good or bad? How does it work? Who holds it?
Are you familiar with Tax Freedom Day? If not, you should be, you work awfully hard to not know.
Defining Surplus, Deficits, and National Debt. Making it all make sense.
Did the Trump Administration just let slip their plan? Is Privatization of Social Security on the table, and is that a bad thing?
Is it a Tax on income you already earned, or a tax on a new income stream?