(Paul Mirengoff) Open warfare between Marco Rubio and Ted Cruz broke out during Tuesday's debate. The topics were (1) intelligence gathering to protect the national security and (2) immigration. As I wrote immediately after the debate, it's the immigration clash that will count most. Both issues matter greatly to Republican voters, but disagreements about immigration matter more than disputes about particular data collection methods. This is why Rubio was desperate to claim
Source: Power Line