MEXICO CITY, March 1 (Reuters) - Mexico's coronavirus czar is back home after being hospitalized for COVID-19 last Wednesday, but will still be monitored and receive treatment, a health official said on Monday, as the country's coronavirus death toll passed 186,000.

SAN SALVADOR, March 1 (Reuters) - El Salvadoran President Nayib Bukele was on course to win a super-majority in Congress in mid-term elections, a preliminary vote count showed on Monday, with his party and allies likely reducing once dominant rivals to a handful of legislative seats.

BRASILIA, March 1 (Reuters) - Brazilian President Jair Bolsonaro said he would issue a decree on Tuesday suspending a tax on diesel fuel, a move aimed at placating truckers who threatened to strike, while sources told Reuters the government would hike taxes on banks to offset lost revenue.

WASHINGTON (Reuters) - The United States could help pay for transportation, healthcare, legal services, and career and educational programs for migrant families separated under former President Donald Trump's "zero tolerance" border strategy, the U.S. Department of Homeland Security (DHS) said on Monday.

WASHINGTON/MEXICO CITY (Reuters) - The Biden administration on Monday downplayed the prospect of sharing coronavirus vaccines with Mexico, saying it is focused first on getting its own population protected against a pandemic that has killed more than 500,000 Americans.

MEXICO CITY, March 1 (Reuters) - Mexico registered 437 coronavirus fatalities on Monday, bringing its overall death toll to 186,152, according to health ministry data.

WASHINGTON (Reuters) - President Joe Biden's U.S. trade representative nominee, Katherine Tai, said on Monday she would work to fight a range of "unfair" Chinese trade and economic practices and would seek to treat Chinese censorship as a trade barrier.

MEXICO CITY, March 1 (Reuters) - Mexico's President Andres Manuel Lopez Obrador, on a call with U.S. President Joe Biden, said on Monday that it is important to maintain good relations between the neighboring nations, adding the countries had to coordinate to promote development. (Reporting by Frank Jack Daniel and Dave Graham; editing by Cassandra Garrison)

CARACAS (Reuters) - Venezuela has approved the use of China's Sinopharm vaccine against the novel coronavirus, the South American country's health ministry said on Monday, after it began administering Russia's Sputnik V vaccine last month.