"I just started a new job" says OP.
Perhaps committing what is mail fraud, wire fraud, and income tax fraud on your first day (or thereabouts) is not the best way to advance one's career or keep one's compass pointed ahead.
It is the employer who sets the terms of what it offers and the employee who accepts them, negotiates for different ones, or turns the job down. If the employer chooses to reimburse a membership but not a CC fee which includes a membership, either one asks to have the policy changed, turns the job down, or lives within the rules.
Let's not forget the NBA referees who went to federal prison, not for doing a lousy job officiating, but for purchasing fully refundable F tickets, submitting those for reimbursement and then refunding them and purchasing the cheapest Y ticket to be had. That reimbursement becomes taxable income and they did not report it.