Here is a list of international Certifying Acceptance Agents for the IRS. In particular the IRS site mentions some of the big FATCA compliance firms:
National / International CPA Firms *
Deloitte and Touche, LLP
Ernst & Young LLP
KPMG LLP
PricewaterhouseCoopers LLP
BDO
For a list of Canadian IRS agents, see this list.
Comment: The IRS agents in our midst are operating an illegitimate business
No free country in the world actually allows the agents of the revenue service of a foreign country operate within its borders. To do so would be to admit the loss of sovereignty. But certifying agents of the IRS are doing work for the IRS.
