My husband and I are separated and he got a credit card in my name. Can I file charges?

In your name? Or a joint account? He cannot sign your name to anything without your permission. You should immediately notify that card company that you do not agree. However, Texas is a marital property state so even if you are separated you are both responsible for all bills that you both incur (with a few exceptions.) Talk to your divorce lawyer and get an injunction.

No one is ever allowed to open a card in your name - not even a loving spouse - without your permission. If you want to remove this from your credit report and from your liability, you will need to start out with a police report. Send a dispute letter to the creditor and the credit bureaus and ask that they close down the account immediately. On a slightly different note: if you are the victim of identity theft, you should put a fraud alert on your credit bureau reports. No one will be able to get credit in your name without hitting that brick wall. And finally, keep in mind that your spouse could continue to run up debt in his own name. If the debt is incurred for the "community" (the sake of the marriage: like paying bills, feeding the children, summer camp, new wardrobe) then you are considered 50% liable under Texas community property laws. Filing for divorce and putting temporary orders in place will be one step in the direction of legally separating your future debt; a final divorce decree will make that change permanent.

It is not legal unless he filed for it with your knowledge and permission and with the knowledge of the credit card company.