William ShatnerWilliam Shatner slammed Donald Trump earlier this week after the US president continued to entertain Canada becoming the 51st state, despite getting a hard no from Canadian leader Mark Carney.“At a certain point, persistence becomes insulting,” the Canadian-born Star Trek actor told Fox News’ Jesse Watters on Tuesday.Shatner — who has previously expressed his concerns about climate change will fare under Trump — tore apart the US president for digging into his annexation threats in the Oval Office o