The White House has asked South Korea to urge its chipmakers not to fill any market gap in China if Beijing bans Idaho-based Micron from selling chips, as it tries to rally allies to counter Chinese economic coercion.

Oil prices jumped Friday after a senior White House official warned that the US believes Russian President Vladimir Putin could order an invasion of Ukraine imminently.

The Biden administration spurned a plan by Intel to increase production in China over security concerns, dealing a setback to an idea pitched as a fix for US chip shortages, according to people familiar with the deliberations.

Intel CEO Pat Gelsinger will virtually attend a meeting being put together by President Joe Biden's administration for April 12 to discuss the semiconductor supply chain issues disrupting US automotive factories, according to a person familiar with the matter.

U.S. President Donald Trump suspended the entry into the United States of certain foreign workers on Monday, a move the White House said would help the coronavirus-battered economy, but which business groups strongly oppose.

Senior officials in the Trump administration agreed to new measures to restrict the global supply of chips to China's Huawei Technologies, sources familiar with the matter said, as the White House ramps up criticism of China over coronavirus.

The White House on Monday will propose a big jump in U.S. government spending on artificial intelligence (AI) and quantum information sciences research and development in its 2021 budget proposal, two people briefed on the plan said.

China and the United States agreed to halt additional tariffs in a deal that keeps their trade war from escalating as the two sides try again to bridge their differences with fresh talks aimed at reaching an agreement within 90 days.

"Apple would not exist without immigration, let alone thrive and innovate the way we do," Cook said.

The impact of President Trump's immigration ban on tech companies has been immediate.

China's push to develop its domestic semiconductor technology threatens to harm US chipmakers and put America's national security at risk, the Obama administration warned in a report that called for greater scrutiny of Chinese industrial policy.

Two senior China executives defended the country's big bet on its semiconductor industry here a week after a White House report called for international action against practices it called unfair. Executives from fab and capital equipment companies said the China government is not being unfair in the way it supports its still-infant industry.

US President Barack Obama appeared to block a Chinese company from buying Germany's Aixtron SE, marking only the third time in more than a quarter century that the White House has rejected an overseas buyer as a national security risk.

As the scale of Trump's success became clear, Asian stocks fell sharply, the dollar weakened and gold prices rallied as investors raced for cover amid anxiety about his economic policies.

The all-American iPhone may remain somewhat of a fantasy for now, but at least a few more of its internal chips could end up being manufactured on home turf.

The Obama administration has declassified some general information about the Comprehensive National Cybersecurity Initiative (CNCI), a sweeping program that protects the government and critical civilian networks from cyberattacks.

As President Obama prepares to sign the $787 billion stimulus bill, administration officials sought to temper expectations, warning that the economy has not yet reached bottom and that increased economic activity as a result of the legislation would "take time to show up in the statistics."