Vetting for Jihad is impossible. It cannot be done. “Vetting” should never be suggested as a solution to Jihad importation.
Why? Because immigrants have children.
And as shown over and over again, the Muslim children of Muslim immigrants are often worse than their parents. Many or most of the Jihadists carrying out the sadistic slaughters in Europe and the USA lately have been second generation Muslims, born in the host countries they attacked.
The only solution to Jihad importation is to not import Muslims. Full stop. Zero. None. Don’t grow the jihad-candidate-pool of first, second and third generation Muslims. Be like Poland, Hungary and the Czech republic. Don’t be like France, Belgium and Britain.
And revoke permanent residency and citizenship of those here. Adopt Japan’s Muslim ban. Muslims are not allowed to purchase property or become permanent residents or become citizens. In other words, come in, visit, do your business, and go back to the Muslim shit hole you came from.