A spouse visa permits you to enter the U.S. as a spouse. You thus must obtain it before you enter the U.S.
What you want is contrary to the rules governing your situation. It is in your best interest to take the time and follow the rules. You and your spouse can immigrate one the paperwork is processed and other requirements are met.
In fact, you stand a good chance of being denied the tourist visa or entry on that visa if it is found out that you are married to a US resident and would apparently have immigrant intent.