The strain on the U.S. air traffic control system could be key to ending the government shutdown.

Air traffic controllers are working an average of 60 hours a week without pay, the head of their union told Forbes, at a time when there’s already a severe shortage of air traffic controllers. While they are considered essential and must continue to work during a shutdown, absenteeism and attrition reportedly played a key role in President Donald Trump’s decision to end the shutdown in 2018-19.

“In a job that’s already stressful, this shutdown has put way more stress on our controllers,” Transportation Secretary Sean Duffy told reporters Monday.

AMD announced a multibillion-dollar deal with ChatGPT creator OpenAI, leading shares of the chipmaker to soar 24% on Monday as the company seeks to challenge Nvidia’s dominance. AMD gave OpenAI the option to purchase up to 160 million shares, representing an estimated 10% stake in the firm.

President Donald Trump’s $100,000 fee for new H-1B visa recipients is expected to hit universities hard, adding to higher education’s woes amid research funding cuts and freezes and new student loan limits set to kick in next year. The Trump Administration is also proposing changing the rules of the visa lottery to favor older workers, which would make it harder for foreign students who graduate from U.S. universities to stay in the country for work.

Shares of AppLovin tumbled Monday as the

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