This is a movie about a man is a cop & his mother came to stay with him. It starred a well known actor.
This movie is about a man went to the IRS for help , ending up holed up in his house, fighting the police, in his yard he had a collection of military equipment, I saw both movies on the TV. Thank you

The first might be Stop! Or My Mom Will Shoot (1992) (http://www.imdb.com/title/tt0105477)

The first might be Stop! Or My Mom Will Shoot (1992) (http://www.imdb.com/title/tt0105477)

Got to spread the rep but that's got to be the first one.

The second one is making me think of Falling Down (1993) (http://www.imdb.com/title/tt0106856/) but I don't remember if his day was a result of the IRS and Im not sure about an arsenal in his yard...