I gave my 2 week notice to my employer. I have 1 week left and they say it is no longer a option for me to stay I must leave with one week left.

Do you hae a contract (could be oral, could arise out of an employee handbook) which limits your employer's right to fire you?  It could either say that you will be employed for a stated duration (i.e. 6 month employment contract) and/or that you can only be fired for given reasons (i.e. will not be terminated except for good cause which is defined as ... .")  If not, do you believe that you are being discriminated against for some statutorily prohibited reason, i.e. because of your race, gender, religion, ethnicity, etc.?  If not, your employer can fire you at any time, for any reason (other than race, religion, etc.)