1964. Lyndon Johnson. War on Poverty. We still have poverty.
1971. Richard Nixon. War on Drugs. We still have drugs.
1971. Richard Nixon. War on Cancer. We still have cancer.
2001. George Bush. War on Terror. We still have terror.
The President's War Powers enable him to enact administrative laws under the Executive Branch departments without Congress ever having declared "war."
I guess it means he gets to spend a bunch of money on say, social programs or imperialism, without waiting around for a Congressional vote.
Nice gig, if you can get it.