Whenever any alien shall be convicted of any felony under the laws of this state, or of any offense involving moral turpitude, it shall be the duty of the prosecuting attorney having charge of the prosecution of such persons so convicted to ascertain if there be grounds upon which the deportation of such alien might be secured under the immigration laws of the United States.

     In case such investigation results in the discovery of facts material to a proceeding for the deportation of such alien, even though such facts alone may not be sufficient grounds for deportation, it shall be the duty of such prosecuting attorney to forthwith advise the secretary of labor of the United States and other proper federal officials of such facts and any evidence obtainable supporting their existence.