Likely two, minimum.
Appointing judges is not “doing nothing,” but rather upholding the duties of the office. It matters a lot, and I don’t trust Hillary, Trump, or Sanders to pick conservatives.
The Senate is still involved in that selection.
And it might be a Democrat Senate.
So, once again, all of the talk about abortion is not relevant to the office of President, neither Trump nor Cruz can do much about the issue.