Thomas Darcy McGee: "All of the "terrorist acts" perpetrated in the US over the last 15 years have been done by Americans"
Ed Op: "Where's all this foreign-launched terrorism you're so scared of?"

I agree the ban is pretty ill conceived.  That said, guys it's not all "puppy dogs and rainbows" on the immigration front.  Thomas your statement is flat out incorrect.  Dec 2009 ring a bell?  A Nigerian 
tried to detonate an "underwear bomb" on Northwest flight 253 carrying 290 folks above Detroit.  The Somali plowing a car into 11 people at Ohio State? Do they not count because they weren't "successful"?  There have been many other foiled plots in the  USA involving folks who aren't Americans easy to find with a simple search.