Not really. Many of those 6 million were caught crossing the border.
Finding and deporting 11 million from the interior is an eintirely different story.
So, how many of those 6 million were deported after entry? I find it difficult to believe that millions of illegals have been caught at the border and turned back, though I suppose they could say they had turned 40 million back at the border and nobody could really say if it was true or not. If the 6 million figure is accurate, and that is with our current anemic border enforcement efforts, then imagine how much better it would be with a fence funneling illegals to various entry points.
Furthermore, we wouldn't even need to seek out the illegals if we would crack down on the employers that hire them.