PHOENIX – Maricopa County Sheriff Joe Arpaio is expected to announce Monday if he'll run for Arizona governor. Several sources confirm to the ABC15 Investigators that Arpaio has already made a decision, and will likely run for the office. In a news conference after this story was first published, the Sheriff said he was still weighing his options, but also that he would in fact have an announcement on Monday. However, when asked about a state sales tax during the news conference, the Sheriff either misspoke or leaked his decision. "When I'm the governor, I'll study the issue," he said....