Iran's Involvement in Iraq's Violence

The President, in my opinion, has made some really bad decisions while in office, but I don't think he would try to lie his way into a war with Iran. OK...I know what some of you are thinking .... But didn't he lie to get us into a war with Iraq?
No he didn't. Someday our Bush-hating MSM will stop trying to keep alive that provably false accusation....probably the same day that Satan gets frostbite....but who believes what the MSM have to say, anyhow?
My advice to the President is to use our considerable resources in that region to catch the Iranians, red-handed, hauling munitions across the boarder into Iraq. Massive secondary explosions from a cross-border truck convoy after being hit with a few Hellfire missiles would be ample proof of Iran's attempts to promote more violence in Iraq.
Short of that, nothing is going to prove Iran's involvement.