We'll never know how many terrorist attacks on the US were prevented over the past twenty years, but no one should be so foolish as to think what Trump is doing will make us any more safe now as we were 6 months ago.  With all of Trump's talk about stopping terrorism, I am waiting to hear what he is going to do with the terrorism of white supremacist groups and individuals like Timothy McVeigh.  I likewise assume our government has done a fantastic job of preventing many, many homegrown terrorist attacks.  Check into the vetting process currently used in allowing immigrants from any and every country into the US.  I have no idea what you mean by "extreme scrutiny," but I know for certain it is exactly what has been - and is now being - done to protect our nation.  Trump is obsessed with his own fantasies of danger around every corner, and distrust (some would say a paranoid distrust) of most everyone.  Not a good basis for a national security policy, is it? Nor is a 37 year old film.