Many Republicans who are eyeing a run for president in 2016 are backing an all-or-nothing plan to defund ObamaCare (The Hill). More than half a dozen possible GOP White House candidates support that strategy while a handful are calling for a more nuanced approach to defunding or repealing the healthcare law. Another five are dodging questions and a couple others are not signaling one way or another. In short, some are willing to go to the brink and beyond of a government shutdown to defund ObamaCare. But it’s far from unanimous. Still, the results of The Hill’s survey favors the shutdown-showdown strategy hatched by Sen. Mike Lee (R-Utah), thanks to outspoken endorsements from GOP frontrunners, such as Sen. Marco Rubio (R-Fla.). The Florida Republican and three other colleagues also entertaining presidential runs — Ted Cruz (R-Texas), Rand Paul (R-Ky.) and John Thune (R-S.D.) — have backed Lee’s effort by refusing to support government funding bills that include money for ObamaCare. The effort places immense pressure on GOP leaders and could result in a government shutdown if it prevents Congress from agreeing on a continuing resolution by Sept. 30. Several top national Republicans have either been silent or agnostic on the threat, including New Jersey Gov. Chris Christie, Texas Gov. Rick Perry and former Florida Gov. Jeb Bush.