Ah, yes, the Halliburton defense.
Accusation (clearly documented): A candidate for president, who advocates supplying nuclear fuel to an "axis of evil" regime, accepting money from supporters of the same regime.
Defense: Halliburton!!!!!
I fail to see how the documented acceptance of large amounts of campaign cash from supporters of a regime that regularly threatens to annihilate us, by a candidate for the U.S. presidency, equates to allegations of kick-backs/favoritism by an American company. I'm sure Halliburton has links to every oil-producing country on the planet -- it's their business. I'm also sure that if dig hard enough, you'll easily find an equal number of links to oil interests for prominent Republicans and Democrats alike.
And I'm absolutely sure the moral equivalence of your argument is not problem for you.