Possible Clues:

• Make sure that's not fake news coming from station on the border
• Official inspection spot
• What made the chicken opt for a secure road crossing
• Bar on train where travellers might be held up
• Reported European drug smuggling in Charlie, for instance?
• Place on a frontier where travellers are stopped for identification
• Where on inspection one may cross sound money order with nib
• A sort of barrier to curb a score
• Nothing in drink on bar for Charlie, perhaps
• Border station