WASHINGTON — Ted Cruz and Mike Lee stand as the Senate’s dynamic duo for conservatives, crusading against President Barack Obama’s health care law while infuriating many congressional Republicans with a tactic they consider futile, self-serving and detrimental to the party’s political hopes in 2014. Cruz, the Texan who’s been anything but a wait-your-turn freshman, and Lee, the tea party-backed giant slayer from Utah’s 2010 election, spent months this summer pressuring Republicans to link any stopgap spending bill to keep the government running with permanently starving President Barack Obama’s health overhaul of money. The two former Supreme Court clerks are determined...