If used properly they should probably be given to newish customers who have a difficult problem the front-line support guys will need to escalate to Tier 2 anyway. But these ones were being handed out to important people solely because those people are important, so I'd say they're by definition being used for "bribery purposes."
The bribe here isn't in the fact that Rep. Jackass and Sen. Blowhard have actually been given something great normal people don't have access to, it's that Jackass and Blowhard think they've been given access to something great normal people don't have. That's a hell of an ego boost, and it'll make those two guys a lot more sympathetic to the guy who handed them the card. In many ways it's the ideal bribe -- in monetary terms it's worth virtually nothing (maybe $10), but it's recipients probably think it's worth a lot because they think it will allow them to totally bypass the most hated customer service system in the country.