Our enemies being the Salafists and Marxists grown in foreign lands.
Traditional Muslims make excellent citizens if they came here to assimilate into our culture.
When will we find out if they came to assimilate or conquer? A day late and a beheading short?
Well, firstly, anyone can be a terrorist, so you can never prevent it 100%.
But if we imitated some security protocals of other nations that have been doing this decades longer than we have, it would help.
1. When someone applies for immigration we take the time to do the background checks based on the info they provide. If they cannot provide said background data, they don't come in. This would be step one, to take control of our immigration process and then validate those who want to come here.
2. Categorically disallow religious sects that claim opposition, hatred for, etc, Western culture. The Salafists are in this group.
3. Do not allow criminals to enter.
4. Do not allow in people with any social media content that indicates hostility to the USA.
5. Do not allow any associates of clergy or professors that have declared hostility to the USA or the West.
6. Enforce existing laws 100%. Overstay your visa, then you do some jail time before we kick you out.
But we don't even enforce our own border security and now the illegal aliens and their profiteers and supporters control the Democratic PArty and our border security is a political wrangle toy to the fools in Washington DC. Clean out those fools and then we can seriously talk about securing our nation.