Yes. There are numerous reasons your landlord can ban your family from rental property depending on the circumstances and the reason for the ban.
Examples:
If the tenant has abandoned the property, moved and legally ended their tenancy, if the landlord owns the mailbox, he may return the mail to the post office UNOPENED. The landlord may NOT open or keep the mail. That is the recipient's property by Federal Postal Regulations. Once the tenant has legally vacated the property, the landlord has a right to the mailbox container, its security and use. The landlord, as the owner of the property does have the right to tell the post office the recipient may no longer receive the mail, HOWEVER, he must not destroy the mail or complete a forwarding order, etc.
If you have a friend who you can trust, a best friend, tell them.
If they set it up that way at the beginning of the tenancy, then, yes. I both use the area, the landlord cannot change that suddenly.
yes; if the LL has reason to believe that drugs or illegal activity are being conducted, he can refuse entry to visitors.
Yes they can, unless your state specifically prohibits this.
the reason is because soldiers cant come to your house or your property and tell you that you have to care of them
You just need to tell your family that they need to leave. If they will not, you can call the police to have them removed.
The lease normally names all the people who will be living there. Then, if anyone else moves in, the landlord has the right to say you are in violation of the lease and he can evict you if those other people don't leave. With that in mind, what your landlord is doing is altering his side of the deal after you altered your side of it. If you don't like the higher rent, move your family out and tell the landlord you are now only going to pay the amount you promised in the lease.
Yes if you are not obeying your fire laws.
Tell your landlord
No, he has to have the unit free of roaches.
If your landlord evicted you he has the right to tell another party, such as a potential renter, that he evicted you. He may not tell another person that he will or is about to evict you.