Notwithstanding the validity or invalidity of your other points, the fact remains that many more millions have crossed in than have been turned back.
There are a little over 15,000 men in an army division.
We've got that many coming in every two days or so now.
That's an invasion no matter how you slice it.
Where are the numbers suggesting this? Curious?
The reality is we have between 10 and 15 million illegals in this Country today (by the best estimates I've seen from sources I trust). Now R. Reagan passed an amnesty bill in 1986 - Thus we are 20 years out from that -
By your numbers above we would have well over 40 million illegals if 15,000 were crossing our borders every couple days! - That just isn't reality.
Additionally a sizable portion of these "illegals" came here on workers-permits and simply never returned back (wrongly so! granted.). But they came here legally in the sense that they received workers permits...and then broke the law after the fact by not returning back - Point this portion again doesn't fall into a category that simply under the dark of night infiltrated our country. Because they came via workers permit and have simply never returned back.
So, no, just by the numbers you mention I have a hard time buying 15,000 are illegally crossing our borders every couple days.
The reality is this is 20-40 year in the making problem (depending on which way you want to look at it) and that those on the right who seem incapable of understanding that good people can come to differing conclusions on which solutions will be best in correcting this situation is beyond me.
Furthermore to want to stick a knife in the back of our soldiers who are off fighting is plain wrong! (by giving them a Democrat majority in Congress...and Democrat party that we know is anti-military, anti-success in the WOT).