I was convicted of petty theft in 1990 of cash �51. I was given a 2yr conditional discharge. I have no other arrests or offences since. I understand my conviction is now spent , however it still shows on police reports i have requested for a US visa. I have been told under the Power of Courts act 1973 or Nacro act 1974 that there may be a ruling that would consider this conviction never have been sentenced up on me?