Why do the Liberals want hike your interest rates?

Today I asked the Liberals why they are taking away CMHC Insurance when Canadian families re-finance their mortgage.
 
At the Finance Committee we have heard people re-finance in order to invest is a small business; undertake home renovation projects, to get through an extended strike or lockout, unemployment - even matrimonial divorce
 
These changes will result in Canadians paying higher interest rates when refinancing a mortgage - this in turn hurts middle class homeowners and also will adversely impact many real estate related industries. 
 
As I discovered today in question period the Government still refuses to tell Canadians why they are making these punitive changes. I will continue to press for an answer.