If I was a beneficiary on my father's policy but was taken off, can I receive a copy of the policy to see who signed the change?
If your brother does not voluntarily provide you a copy, you could only get a copy if you sued: in the course of a lawsuit, you have access to legal mechanisms or procedures, called "discovery," that let you get documents, but those procedures are *only* available in litigation (a lawsuit). You'd have to sue someone, such as whomever replaced you as beneficiary, for fraudulently or falsely changing the policy. Of course, it may turn out that the change was proper and valid--e.g. your father may have removed you as beneficiary, which is his right. So unfortunately, you'd have to file the lawsuit to see the policy before knowing whether there was anything improper or illegal going on.