Leading immigration lawyers and activists say the US government has intensified its crackdown on Chinese scientists and researchers – a campaign they argue is even more aggressive than the controversial “China Initiative” launched during US President Donald Trump’s first term. “I think now we are clearly in an era of China Initiative 2.0,” said Robert Fisher, a former Assistant US Attorney and a partner at Nixon Peabody, a Boston-based international law firm. The initiative, launched by the...