Sen. Kyrsten Sinema (I-AZ) is burning through taxpayer funds at a rate that suggests she’s not running for re-election. The former Democrat-turned-independent spent an unusually large amount – $210,000 – of public money on private chartered air travel since 2020, and she has been steering more than $100,000 a month in security expenses to Tulsi Gabbard’s sister, reported The Daily Beast. “That amount of money is just mind-boggling,” said Brendan Fischer, executive director of the watchdog group Documented. Sinema’s campaign spent more than $350,000 on security and related expenses in the secon…