The income requirements for filing taxes are quite low. If filing single, you need to file a federal return if you earned more than $10,300 in 2015. The amount doubles for a married couple. If you earned more than $8,000, you need to file a state return. Filing a return is necessary if you expect a refund of taxes withheld by an employer or through the Earned Income Tax Credit.
If you had one or several accounts outside the U.S. that had more than a combined amount of $10,000 at any time over the year, you probably need to file. The Report of Foreign Banks and Financial Accounts (FBAR), FinCEN Form 114 needs to be electronically filed with the Treasury Department's Financial Crimes Enforcement Network (FinCEN).
The sale of debt is expanding from past due medical accounts and unpaid credit card balances to tax liens. The private investors who purchase these debts are usually much more aggressive with their collection efforts.
The general answer is no. How broad in the definition of uniform?