Canada

"Canadian corporations that receive dividends from U.S. subsidiaries are currently subject to a 5-per-cent withholding rate under the tax treaty between the U.S. and Canada, much lower than the statutory rate of 30 per cent.

But under section 899, Canadian companies would see their tax rate increase by five percentage points each year until it reaches 20 percentage points above the statutory rate, or 50 per cent. It would remain in place until the “unfair tax” is removed.

Similarly, Canadian individuals who own U.S. securities directly are subject to a 15-per-cent withholding tax rate under the current treaty, reduced from the statutory rate of 30 per cent. Under section 899, the withholding rate could ultimately rise to 50 per cent"

He's strong arming our government to drop trade barriers, going after pensions and investors who can't switch their investments without a capital gain tax. It would screw me over dramatically.