The IRS is one of the agencies that should be closed completely.  COMPLETELY!
Only way to bring real change is to force Congress to do their damn job.  The cluster f*** that represents the IRS's efforts needs to end.  
END INCOME TAX AND INCOME TAX RETURNS.
SINCE THE USA IS A CONSUMER NATION, INSTITUTE A CONSUMPTION TAX.  
Get everyone paying taxes on what they purchase, excluding food.  I can't tell you how many people I know working the system, paying zero or next to zero in taxes, living in $1million+ homes, driving luxury cars, and ON OBAMACARE!!!!!
I know an architect that has never filed an IRS tax return.  NEVER!!!!!!  His whole life, never paid a dime in taxes, and he made a six figure income much of his life.