Well... it could be that he believes in importing cheap labor for big business. Could be he believes weakening the American Middle Class and US sovereignty for daddy's New World Order.
It's actually not so "bizarre" or even accidental if everything he does or doesn't do aids the emerging result.
I've found it tough to give Bush the benefit of the doubt about this since he refused to protect the country at our porous border immediately after 911.
I've concluded that his behavior is not an accident. It is intentional, it is consistent. It is policy.