I chose $Vanguard S&P 500 ETF (VOO.US)$ instead of $VANGUARD...

I chose $Vanguard S&P 500 ETF (VOO.US)$ instead of $VANGUARD S&P 500 INDEX ETF TR UNIT (VFV.CA)$ because my confidence in CAD is low. I fear that a downturn in our housing market will severely negatively effect our dollar. Of course this is speculation and a personal decision