How do I allow this if statement to be recognized?

I am attempting to create a loop for a login code and have been struggling to format this code to reach the "User Accepted" on line (16). How could I reformat this to allow this code to work correctly?

    ##### USER INFO #####
Users = {
  'jc1':123
  ,'jc2':213
  ,'jc3':312
  ,'jc4':321
  ,'jc5':231}
ADPIN = '14726'
##### LOG-IN #####
while True: #Loop Creation
  JK = input('Please enter your username: ') #Username Check
  if JK in Users:
      DK = input('Please enter your password: ') #Password Check
      print('Bug Text Main')
      if JK and DK in Users: #Problem Statement
        print('User Accepted: Hello '+JK+'.') #Unreachable Code
        print('Objective Text')
  else: 
    ToC = input('It appears that the username entered does not exist: Would you like to try again(Press: 1) or create an account(Press: 2)')    #Retry / Account Creation
    if ToC == '2':
      AD = input('Please enter an administrative pin: ')
      if AD == ADPIN:
        add = input('Please enter a username: ')
        tht = input('Please enter a password: ')
        Users.update( {add:tht})
        print('Bug Test Users Append')
    else:               #Restart / Retry
      print('Bug Test Restart')