Contrary to the invented reality many Republicans now live in, Obama's stance has always been to secure the borders first before doing anything on immigration, and the President has lived up to that promise. There aren't 18,000 border security people as previously stated in this thread. The number is actually just over 21,000.
Deportations have gone up 10% a year under Obama over Bush, and illegals entering America has now been a net negative number in recent years.
Contrary to the GOP fairytale, the border has been secured. Billions of dollars in additional resources were added in the POTUS' stimulus.
Why has the GOP done nothing on the matter? Because they've never wanted secure borders under Obama so they can cynically blame him, yet the opposite has ended up working out as the borders are more secure now than they've ever been in my lifetime.
It's simply a Republican strawman from the Lou Dobbs days at CNN in the 90's they keep repeating.