President Bush put a DemocRAT, Michael Browne, in charge of FEMA.
If Ubama put a Republican in charge of ICE, and then this happened, you might have a fair comparison.
In the event of a natural disaster the role of the federal government is to provide assistance to the state and local governments. During Katrina the two main idiots in charge of foundering areas were the Governor of Louisiana and the Mayor of New Orleans. Neither of those two demonstrated any capability to handle the problem. It was not in the President's normal powers to take over those functions without the request of the state and local officials. That handover takes time.
The problem in the RGV is completely the federal government's responsibility. The fact that Texas DPS is running heavily armed riverine craft and helicopters on the border demonstrates that the federal government is failing to do its duty. Having worked for a small organization within DHS, I can say that the leadership in the RGV is failing. The administration is failing. It is failing on purpose. You can't tell me that it isn't cheaper to move a couple hundred BP agents to McAllen on a temporary basis than it is to fly thousands of illegals out. If the problem is immigration judges, then swear in some more and send them down there. One stop shopping. Illegal kid gets caught. Put him in the system, get him checked over for medical problems, take him to the judge, take him to the airport for a chartered airplane ride home.
I listen to Michael quite a bit on his Denver radio program. If he is a dem you'd never guess it. Some of the best radio on the air.
Excuse me, but I don't think Michael Brown was a Democrat.
My recollection is that he was from Oklahoma, where he ran for office as a Republican.
Wikipedia confirms.