I am afraid Bush had seven years to do this. All he did was conspire with McCain and Graham to keep bringing up, on behalf of their Mexican masters, the damn amnesty bill, and dragged his feet on the wall construction and true enforcement. Bush is the only two term president to this level to have thumbed his nose at the corrosion of our national sovereignty and territorial integrity ending with deaths for many, and thousands paid for this stubborness and corruptness with their very own lives. Oh believe me, the Democrat Congress comes in for criticism on this, too.
But we can no longer say this "At least Bush kept us safe" rubbish. It is not true and we have the facts and statistics to prove it.
If we follow your logic then no President kept us safe since the inception of the Republic. You are confusing regular crimes with terrorist attacks.