Foreign Retirement Tax Withheld

You can report Canadian RRIF distributions in TurboTax under 

1. Wages & Income
2. Retirement Plans and Social Security
3. Canadian Registered Pension Income. 
4. Enter the full form information in US Dollars
5. Also, report the tax withheld under 
   1. Deductions & Credits 
   2. Estimates and Other Taxes Paid
   3. Foreign Taxes 
   4. This will claim a foreign tax credit. 

I retrieved this from a previous user's question. I go through #5 having ~17K for income and $2500 in withheld. But when I finish entering it, my Federal Tax Due does not go down as I expect it to.