Castro has been a longtime gun control advocate and currently supports three key policies: renewing the ban on so-called assault weapons, curbing the use of high-capacity magazines and instituting universal background checks. Castro, as part of his education plan, has supported the creation of so-called “red flag” laws, which allow families and police to petition a judge to temporarily block someone’s access to firearms if there is credible concern they might hurt themselves or others. Castro, when speaking about the issue, often leans on the fact he is from Texas, a state that embraces gun culture and hunting. But he’s argued that it is possible to “have common sense gun reform and still have the Second Amendment in place.”