420. Involvement in terrorism-related activity.

'Involvement in terrorism-related activity' is1 any one or more of the following:

  1.  

    (1)     the commission, preparation or instigation of acts of terrorism2;

  2.  

    (2)     conduct which facilitates the commission, preparation or instigation of such acts, or which is intended to do so3;

  3.  

    (3)     conduct which gives encouragement to the commission, preparation or instigation of such acts, or which is intended to do so