Would the U.S. see negative effect if all the illegal immigrants were deported?

The Perryman Group has conducted a study on this, and their study found nothing but negative effects on the US. What do you think? and do you still think getting rid of them would be good for us?
The Perryman Group as a part of this study indicate that there are currently approximately 8.1 million undocumented [...]

How do you feel about Israel funding Hamas knowing they were a group bent on destroying the Israeli State?

And why does the Israeli government (at least as of June 2008) allow some Israeli citizens to profit from funds collected by Hamas that are then used (according to Israel) to fund terrorist activities against its own citizens?
http://www.upi.com/Business_News/Security-Industry/2002/06/18/Analysis-Hamas-history-tied-to-Israel/UPI-82721024445587/
http://www.israeltoday.co.il/default.aspx?tabid=178&nid=16447
@curious, it’s not about aid. It was about i) Israeli taxes being partially used to fund a [...]