Sen. John McCain (R-AZ) pursued a robust line of questioning during Tuesday's confirmation hearing for Rep. Mick Mulvaney (R-SC), nominated to be the next head of the White House budget office, chastising him for his "lack of support" for the military and his insistence that defense spending should not increase unless it is offset by cuts in non-defense funding. McCain, who recently authored a proposal to increase defense spending by an additional $430 billion over five years, castigated Mulvaney, a...