SummaryFederal judge in Boston considers issuing injunctionTrump suspended ability of foreign nationals to study at HarvardHarvard accuses Trump of infringing its First Amendment rightsBOSTON, June 16 (Reuters) - A federal judge said on Monday that she would issue a brief extension of an order temporarily blocking President Donald Trump's plan to bar foreign nationals from entering the U.S. to study at Harvard University while she decides whether to issue a longer-term injunction.U.S. District Judge Allison Burroughs, at the end of a hearing in Boston in Harvard's legal challenge to the restrictions, extended to June 23 a temporary restraining order that...