PORTER: You might have seen this ad, paid for by Washington's special interests. It's a straight-up lie. I'm Katie Porter, and I oppose higher gas taxes. And I won't be afraid to take on leaders of both political parties and do what's right for Orange County taxpayers. Mimi Walters? Mimi Walters votes with Donald Trump 99 percent of the time, and Mimi Walters raised taxes on middle-class Californians. I'm Katie Porter and I approve this message, because I’ll stand with Orange County families 100 percent of the time.