Very few in the US are actually in favor allowing illegal aliens into our country.
However, the main problem with that arguement (which a lot of Europeans make) is this:
Mexicans do not come into the United States with a religious tradition which advocates the destruction of America and the barbaric murder of all of our citizens.
"Why do you guys allow 50 million illegal Mexicans into the USA?"
'Cause we don't have the Atlantic Ocean and the English Channel to stop them....LOL
Oh, I wasn't advancing my comment as an argument. Merely observing the political realities.
"Very few in the US are actually in favor allowing illegal aliens into our country"
I suspect you are right. However, the evidence doesn't seem to support the rhetoric. Don't get me wrong, though. It's not That I disagree with your question:-
"....why do you keep allowing the jihadists into your country?"
Nor do I take exception to it. It's just that I cannot proffer any simple, sensible answer. You're asking a question which those of us in this country who recognise the folly, and who are robustly anti-Islam, have been posing for years. Simplistically, it boils down to the fact that we are a nation which has lost its way. ( How could I explain to you, for example, why a country chooses to re-elect a government, as we did recently [and which got less than 37% of the popular vote], fully in the knowledge that that government is commited to handing over our sovereignty to a bunch of unelected foreigners in Brussels?!!!) We are a society which has allowed itself to become so so deeply imbued with a socialist/humanist ethos that it virtually guarantees the ascendency of Islam as the dominant political force within the next couple of decades. And I predict that all of western Europe will fall similarly.
So, yeah, I wish I had an answer that made any kind of sense.