BOSTON – A federal judge in Boston on Thursday temporarily blocked US President Donald Trump from barring US entry of foreign nationals seeking to study or participate in exchange programs at Harvard University. Under a two-page temporary restraining order granted to Harvard, US District Judge Allison Burroughs enjoined Trump’s proclamation from taking effect pending further litigation of the matter amid an escalating dispute between the Ivy League school and Republican president. The judge ruled that Trump’s directive prohibiting foreign nationals from entering the United States to study at Harvard for the next six months would cause “immediate and irreparable injury”...