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nbsp;But the hangup, apparent in public comments from the two senators, is a request from McConnell for assurances that Democrats will not get rid of the legislative filibuster -- the requirement that bills clear a 60-vote procedural hurdle before a final up-or-down vote -- during the upcoming Congress. scarpe eleganti uomo pittarello It also includes expanded distribution of automatic green cards to immigrants with Temporary Protected Status as well as Deferred Action for Childhood Arrivals (DACA) recipients and a plan to give $4 billion to Central American countries in an effort to target the "root causes" for migration into the U. scarpe eleganti uomo pittarello Scientists may be able to predict some very obvious mutations that can pop up, such as certain amino acid changes on the spike protein that impact antibody binding or alterations in the spike's RBD  which would impact the virus's ability to stick to and enter human cells, Racaniello said. scarpe eleganti uomo pittarello CUOMO RAISES EYEBROWS WITH 'ANATOMY' JOKE DURING VACCINATION TOURThe White House did not respond to requests for comment from Vice President Kamala Harris, who said during the 2020 Democratic presidential primary campaign that she believed women who had accused then-rival Joe Biden of inappropriate touching. scarpe eleganti uomo pittarello