Obama told a Phoenix audience Thursday that he met Giffords and her husband, Mark Kelly, while he was in town.
Congressman reflects on the good, bad of serving.
Republican is in line to oversee military and defense policy and budgets.
Certification of election results will move forward on Monday; recount expected.
A lawsuit challenges the rejection of 133 ballots.
Lawyers clash in federal court over 133 uncounted ballots in CD2.
McSally campaign wants judge to throw out the legal challenge filed by Barber/