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US President Donald Trump is known for his more than controversial statements on Twitter. But apparently Trump doesn’t like contradiction and ridicule and has blocked several users on the social network. A New York court has now ruled that the President is acting unconstitutional with this behaviour.

While the trade conflict between China and the USA is calming for the first time in months, tech companies like Amazon, Google and Microsoft are looking for alternatives to production capacities in China. If the rumours are true, this could rekindle the conflict. But the tech giants have good reason to seek out other and cheaper countries for their productions.

Tesco wants to develop Artificial Intelligence (AI) to allow customers to walk in, fill their bags and leave. Without having to engage with checkout staff or a self-checkout system, they clearly want to take on Amazon Go. This turn of events could become big competition for Amazon in the world of payment. The British supermarket leader is developing technology to make its checkouts a thing of the past. A camera network and sensors on shelves, all armed with AI, will keep track of what customers put in their baskets, automatically charging them for their shopping as they go on their way.

As the trade war with China goes on escalating, trying to offset the cost of tariffs by raising prices is going to hurt sales for online retailers. If the showdown between the U.S. and China gets worse, Amazon will also be affected. Amazon sellers all over the world are trying to get through this unpredictable tariff minefield, upsetting their stable business model of buying cheap goods from China and selling them with a markup in the U.S. The problem is pushing the limits of what these sellers can handle, with Trump dropping another $300 billion worth of tariffs, most of which is on consumer goods.

Amazon has announced its Prime Day for 2019. The official kickoff is on July 15th, and it is no surprise that it will last for 48 hours. Amazon customers will be able to enjoy savings all the way through the end of July 16th. Even though Prime Day 2019 was just announced, there are already Amazon Prime Day deals going up. But the biggest sales day of the year isn't really great for the sellers on the platform. Amazon also has major server problems caused by the number of shoppers.

After 5 years on the stock market, Rocket Internet may be leaving the public world. Unnamed sources have said that CEO and co-founder Oliver Samwer wants the European investor and incubator to become an opportunistic investor again – without disturbances. Rocket Internet was listed on the Frankfurt Stock Exchange in October 2014, but the compancy never seemed comfortable there.

The U.S. Senate Banking Committee has announced a hearing set for next month to question witnesses on Facebook's new Libra cryptocurrency. Set for 16 July 2016, the hearing is entitled "Examining Facebook's Proposed Digital Currency and Data Privacy Considerations", but the committee hasn't exactly said who will be offering testimony. The hearing comes just days after Facebook announced formally their new cryptocurrency and blockchain ecosystem.