Can somebody help me with this.....On the 10th december the emassy in london sent me a letter stating they are ready to issue my visa,i was told to ring dx secure and they would pick my passport up and deliver it back,the american embassy recieved this on 22nd of december,january 10th they then asked for my mum who is a us citizen to file an I-864 affadavit of support,we have done that and london tell me it is under review,why was i told they are ready to issue my visa then ask for something else,what is under review,does anyone know how much longer it would be for them to issue my visa and return my passport....