There's no official Sen. Ted Cruz presidential team — yet. But the Texas Republican is already surrounding himself with key strategists and advisers that could make his transparent White House ambitions a reality. The tea party firebrand relies on a small circle of advisers to inform his views and amplify his ultraconservative message. The inner circle breaks down into two groups: his chief advisers in the Senate office, and the chiefs of his nationally-focused political operation, which he beefed up in the summer of 2014 by hiring a crop of seasoned Republican campaign operatives. These are the key players that...