It wasn't all bad for Apple (AAPL -0.84%) when management was grilled by lawmakers last week over its tax strategies. Several members of the Senate subcommittee bashed the corporate income tax code instead of Apple, noting that Apple was legally playing by the rules, albeit extremely effectively. Besides, plenty of other tech giants use the same strategy.

Well, another lawmaker has now rushed to the Mac maker's defense: former senator John E. Sununu.

The blame game
The former Republican senator from New Hampshire has written an op-ed for The Boston Globe aptly titled, "Not Apple's fault." Sununu notes the irony that Senator Carl Levin, who spearheaded the anti-Apple sentiment, was the only lawmaker whose tenure goes back as far as Apple's tax structure. Levin took office in 1979, just a year before Apple established its Irish subsidiaries in 1980.

Like all American corporations, Apple just seeks to legally minimize its taxes and avoid the corporate 35% tax rate wherever possible, seeing as how that rate is among the highest in the industrialized world. Indeed, Apple's total effective tax rate is on par with Samsung, its biggest foreign competitor, but Apple needs to utilize a complex corporate structure and bear the related costs.

Sununu also praises CEO Tim Cook for his confidence, reiterating that Apple pays "every single dollar" that it owes in taxes while emphasizing weaknesses in the current tax code. Cook expressed no remorse for the corporate structure that's been around for over three decades, including when Apple was flirting with bankruptcy in the late '90s. In Sununu's opinion, that helped refocus blame to where it belongs: Congress.

The U.S. corporate tax code is uncompetitive relative to many other countries. Business taxes comprise 2.6% of GDP, which is higher than other countries like Ireland, Germany, and France. The former lawmaker sees that as evidence that tax reform is needed, since the U.S. tax code is convoluted and uncompetitive.

Sununu's opinion piece ends succinctly: "[The Senate subcommittee] also provided a reminder that those responsible for the mess were asking the questions, not sitting at the witness table."