Remember that the Arduino is a slave USB device, not a host. To plug a slave device (the USB webcam) into the Arduino, you'd need the Arduino to be a USB host. USB host devices are much more complicated than slaves, in general.
Remember that the Arduino is a slave USB device, not a host. To plug a slave device (the USB webcam) into the Arduino, you'd need the Arduino to be a USB host. USB host devices are much more complicated than slaves, in general.