...why do our liberal politicians say that if we open up all our oil reserves (CO Shales, ANWR, the Gulf, offshore and deepsea), that it won't effect oil prices! 
I mean the Saudis up there production to a 30 year high and the price of a barrel of oil drastically shot down!
We have a ton more UNTAPPED oil reserves than the Saudis!!! The only ones who rival us are Russia (and maybe Canada), yet we aren't able to tap them all!
So if the Saudis by simply uping production can drastically reduce oil prices, why can't America drastically do it by tapping all our sources?

I mean the Saudis up there production to a 30 year high and the price of a barrel of oil drastically shot down!
We have a ton more UNTAPPED oil reserves than the Saudis!!! The only ones who rival us are Russia (and maybe Canada), yet we aren't able to tap them all!
So if the Saudis by simply uping production can drastically reduce oil prices, why can't America drastically do it by tapping all our sources?
Iran on verge of disaster - Israel Opinion, Ynetnews
and the growing Saudi output produced a situation whereby supply is higher than demand, prices are dropping, and Iran's customers are switching to Saudi Arabia. The Kurds in northern Iraq are doing the same and have also boosted their oil production.
The Saudis are doing it on purpose. They are highly interested in drying up Iran, among other things against the backdrop of Tehran's support for Syrian President Assad. Saudi Arabia can allow prices to drop to $80 a barrel before being hurt, and such prices are indeed drying Iran up and causing huge damage. After all, some 80% of Iran's revenues come from oil.