Former Alaska Gov. Sarah Palin is heading to Haiti this weekend with evangelist Franklin Graham, a Palin source confirmed to POLITICO. Palin and Graham will visit a cholera clinic in addition to other stops, as was first reported by CNN. The Haiti visit was the second foreign trip to surface Thursday. Palin is also planning possible visits next year to Israel and Britain. The Haiti trip could serve two distinct political purposes for Palin. First, it provides an opportunity to expand her image and policy portfolio beyond her limited image as a darling of the tea party movement. Second, she'll...