Yes, because we save money by not having to support the illegal and their children. We also don't have to spend $$$ to keep them in prison.
Unless its for a violent criminal, no.
Let's invest that money in programs that naturalize more immigrants and let them become members of our society, which is obviously what they want if they took the risk of coming here.
Why deport when you could use methods to prevent illegal immigration or help integrate them into society?
It isn't a fiscally responsible thing to do.
It isn't. But summary execution is, because it removes the chance of them coming back.
Use the money to stop illegals from coming in the first place