A US government panel rejected Ant Financial’s acquisition of US money transfer company MoneyGram International Inc over na­tional security concerns, the companies said on Tuesday, the most high-profile Chinese deal to be torpedoed under the administration of US President Donald Trump.

The $1.2 billion deal’s collapse represents a blow for Jack Ma, the executive chairman of Chinese in­ternet conglomerate Alibaba Group Holding Ltd, who owns Ant Financial together with Alibaba executives. He was looking to expand Ant Financial’s footprint amid fierce domestic competition from Chinese rival Tencent Holdings Ltd’s WeChat payment platform.

Ma, a Chinese citizen who ap­pears frequently with leaders from the highest echelons of the Communist Party, had promised Trump in a meeting a year ago that he would create one million US jobs.

MoneyGram shares were down 8.5 per cent at $12.06 in after-market trading.

The companies decided to terminate their deal after the Committee on Foreign Investment in the United States (CFIUS) rejected their proposals to mitigate concerns over the safety of data that can be used to identify US citizens, according to sources familiar with the confidential discussions.

“Despite our best efforts to work cooperatively with the US government, it has now become clear that CFIUS will not approve this merger,” MoneyGram chief executive Alex Holmes said in a statement.

A standard CFIUS review lasts up to 75 days, and the companies had gone through the process three times in order to address concerns. Additional security measures and protocols that the companies suggested failed to reassure CFIUS, the sources said.

The US Treasury said it is prohi­bited by statute from disclosing information filed with CFIUS, and declined to comment on the MoneyGram deal.

The US government has toughened its stance on the sale of companies to Chinese entities, at a time when Trump is trying to put pressure on China to help tackle North Korea’s nuclear ambitions and be more accommodative on trade and foreign exchange issues.

The MoneyGram deal is the latest in a string of Chinese acquisitions of US companies that have failed to clear CFIUS. They include China-backed buyout fund Canyon Bridge Capital Partners LLC’s $1.3 billion acquisition of US chip maker Lattice Semiconductor Corp, China Oceanwide Holdings Group Co Ltd’s $2.7 billion acquisition of US life insurer Genworth Financial Inc and Chinese buyout firm Orient Hontai Capital’s $1.4 billion acquisition of US mobile marketing firm AppLovin.

The MoneyGram’s deal demise is also the latest example of how CFIUS’s focus on cyber security and the integrity of personal data is prompting it to block deals in sectors not traditionally associa­ted with national security, such as financial services.

Other US financial services deals by Chinese firms are waiting for approval from CFIUS, including HNA Group Co’s acquisition of hedge fund-of-funds firm SkyBridge Capital LLC from Anthony Scaramucci, the Trump administration’s former communications director.

Skybridge and HNA did not immediately respond to requests for comment.

Dallas-based MoneyGram has approximately 350,000 remittance locations in more than 200 countries. Ant Financial was looking to take over MoneyGram not so much for its US presence but to expand in growing markets outside of China.

Ant Financial and MoneyGram said they will now explore and develop initiatives to work together in remittance and digital payments in China, India, the Philippines and other Asian markets, as well as in the US. This cooperation will take the form of commercial agreements, one of the sources said.

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