Officers repeatedly stopped young men, checking documents and searching bags.
But in the past few days, local residents say, the police on both sides have been checking documents more carefully than usual.
The Brady bill would give authorities extra time to check such documents - and end illegal transactions.
Officers of the Soviet border contingent were also said to be checking documents just a few yards away from the Lithuanians.
Employers are required to check documents before they hire workers.
In all our content we must check and verify information, facts and documents, where required to achieve due accuracy.
Guards at the door, checking documents, wore bulletproof vests.
However, the new immigration regulation that came into force in April 2010 entitles police officers to check passports and documents.
Police stop vehicles regularly to check documents.
There have been reports, including in Bogotá, of bogus policemen approaching foreigners to 'check' documents or foreign currency.