The 30 year fixed mortgage is a product that gets massive implicit government subsidies. It is a terrible deal for the American taxpayer. Note that this product can simply not be available in other countries.
Are you trying to claim it's a bad deal for the mortgagor? That is a claim that's going to require quite a lot of evidence.
Are you trying to claim it's a bad deal for the mortgagor? That is a claim that's going to require quite a lot of evidence.