@layman,
Trump's zero tolerance policy is the immediate cause of this rapidly escalating family separation crisis. That policy can be altered, by Trump, by a simple call to A.G. Sessions, or probably even by a Tweet.
Trump is intentionally holding refugee children hostage in order to get political leverage to fund the building of his wall. Why? So his image won't suffer if he can't get that wall built. Why should anyone, from either party, support this self-serving, cruel, inhumane, crap just to appease the Bully-In-Chief?