PRESIDENTIAL RACE

LAS VEGAS — Donald Trump's grasp on the Republican presidential nomination is tightening, and the billionaire businessman's rivals get one more chance to challenge the Republican front-runner on the debate stage before next week's slate of nearly a dozen Super Tuesday contests.

AP Photos.

SUPREME COURT-SACRIFICIAL LAMB

WASHINGTON — Republicans are refusing to hold a vote or hearings on any candidate for the U.S. Supreme Court nominated by President Barack Obama, complicating his efforts to seek a replacement for deceased conservative Antonin Scalia.

ZIKA-CUBA

HAVANA — Olive-clad soldiers are going door-to-door across Cuba, filling houses with mosquito-killing fog in a nationwide mobilization to keep the Zika virus out of one of the last countries in the hemisphere without it. By Andrea Rodriguez.

STAIRWELL SHOOTING-ASIAN ACTIVISM

NEW YORK — Some Asian Americans think New York City officials were making an example out of Peter Liang, a cop convicted of manslaughter for accidentally shooting an unarmed black man, because he comes from a community that isn't considered a political heavyweight. 

BOLIVIA-MORALES-REFERENDUM

LA PAZ, Bolivia — President Evo Morales grudgingly accepts his first direct electoral defeat in a decade in power, the narrow rejection of a constitutional amendment that would have let him run again in 2019. 

CUBA-DISSIDENTS

HAVANA — The Cuban government has loosened travel restrictions on some of the island's best-known dissidents, granting them one-time permission to travel abroad ahead of President Barack Obama's trip to the island, activists said Wednesday.