He couldn't have vetoed the tax increase? Of course, he could have.
The only reason that Clinton, who had promised the people of Arkansas that he would finish his term as governor, won the primary is because some A list Dems did not run due to Bush41's (short-lived) popularity. The only good thing about this is that the Clinton's had to rush with shredding all the documents that proved their corruption.
Bush could have still won if he had pushed back about the tax increase, exposing the Dems for lying about cutting spending $3 to every $1 in tax increases. Of course being the "gentleman" (read: pushover) that he was, he just took the arrows.