WASHINGTON (AP) — American military contractors operating in Iraq are accusing Baghdad of employing strong-arm tactics to make them pay exorbitant income taxes, a practice they've warned the Trump administration is hampering the fight against Islamic State extremists. To force payment of the taxes, which the companies say are haphazardly calculated and can total millions of dollars, Iraqi authorities have held up — and even threatened to stop altogether — delivery of essential supplies, including food, fuel and water, bound for U.S.