Can my wife come into my house without permission, open my mail, steal my payroll check that was mailed to me, then cash it at her bank?

Also, she opened up all my tax return mail and filed taxes separately using my deductions, etc. Is this legal?

She also opened all my bank statements, Motor vehicle mail, and retirement account mail and photocopied it.

Background:

Since Dec 28 2006 we have been living separately in different residences, (her in a rented apartment, me in our jointly-mortgaged single-family home), but we have not yet filed for legal separation or divorce.

We have separate bank accounts. Neither has access to the others account.


PLEASE HELP.