Maybe because his own party's legislators are spending money as though it falls down out of the sky on demand? Whatever else the current crop of GOP Congresspersons and Senators may be, the one thing they are NOT is fiscal conservatives.
First, the chart indicated that Bush had not vetoed legislature, while other Republicans had.
Well that is misleading since the other Republicans had to deal with an opposition Congress.
Just like Clinton did.
Second, spending bills are suppose to the responsibility of the Congress not the White House.
Third, much of our spending is not discretionary.
Fourth, we are engaged in a war and in addition, have had an entire city destroyed.