The JU.S.A have had an air force base in Turkey for 50 plus years. They are generally on the same team, even when they are not happy about it. Strategically important too (middle east and in the past USSR)
Population of 80million and a relatively wealthy nation (selling military hardware). The Kurds on the other hand are of no use to the USA other than as cannon fodder. Sucks for them, but that's the reality.