Do you think we should have went into Iraq in 1991 instead of 2003 but we didn't?

What do you think about it? Would Iraq in 1991 would result an insurgency just like in 2003 or no? How did an Insurgency get into Iraq in 2003? What build it up? I heard that we didn't went into Iraq in 1991 due to the fact the UN mandate only allowed the liberation of Kuwait.