The state department said its decision had been taken in view of the MEK's public renunciation ofviolence, the absence of any confirmed actsof terrorism by the organisation for more than a decade and its co-operation in the closure of their paramilitary base in Iraq.
Four of the nation's top intelligence officials have testified before Congress that it is certain new actsofviolence will be undertaken in the next three to six months.
Mr McBride, who has acted for Celtic Football Club, told BBC Radio 4's Today programme that the problem was being fuelled by websites encouraging people to commit actsofviolence.