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The US has the most confirmed cases of any country, but its response is hampered by a lack of testing. Experts largely agree that widespread medical surveillance is critical for effectively fighting the pandemic, especially for finding asymptomatic spreaders.

The US west coast state benefits a lot from its exports to China, with products ranging from computers, agricultural goods, and chemicals.

The US Department of Defense confirmed on Monday that it had conducted a flight test of a ground-launched cruise missile, which hit its intended target after traveling more than 500 km.

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The US Federal Aviation Administration said it expects Boeing will soon complete improvements to an automated anti-stall system suspected of contributing to the deadly crash of another new Boeing 737 Max 8 in October, and update training requirements and related flight crew manuals.

The United States is reducing the validity of B2 tourist visas from five years to three months and from multiple entries to single entry, citing "reasons of reciprocity." The changes were posted online by the US Embassy in Cuba and are to go into effect starting Monday.

The UAE is one of his stops in a regional tour aimed at reassuring allies after a shock December announcement by US President Donald Trump that US troops would be withdrawn from Syria.

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The US imported 2 billion in autos last year, 1 billion more than it exported, a deficit that has risen 29 percent since 2013, according to Commerce Department figures.

The UN Security Council unanimously adopted resolution 2375 on Monday to respond to the Democratic People's Republic of Korea's sixth nuclear test, conducted on Sept 3.

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The US concluded talks two weeks ago with Canada and Mexico on the new USMCA trilateral trade agreement, which the three countries must ratify before it takes effect. It is intended to replace the North American Free Trade Agreement.

The US Air Force issued a statement saying it was "appalled" by McSally's allegations.