US: AstraZeneca results may have included outdated info Railroad merger to link Canada, US and Mexico Cuba to vaccinate over half population Biden calls for assault weapon ban after Colorado shooting UN chief concerned over violence against Asians Racism in public offices poses great harm Report reveals incompetent US pandemic containment in 2020 Colorado shooting prompts calls for tighter gun control Report urges US to drop double standards on human rights Biden administration weighing corporate tax increase: Yellen Ten killed in mass Colorado shooting US ethnic minorities devastated by racial discrimination: Report Continuous social unrest threatens public safety in US: Report Colorado supermarket shooter kills 10, including police officer AstraZeneca to publish full data from vaccine trial after objections US CDC voices concern over new surge in COVID-19 cases: media US President Biden to join EU leaders' video conference on Thursday, EU says White House says considering executive actions on gun safety in wake of Colorado shooting China vaccines help Mexico skirt hurdles