Amazon in Trump’s crosshairs: Here’s what the US President could do

(FILES) This file photo taken on June 16, 2017 shows a visitor checking in at the Amazon corporate headquarters in Seattle, Washington. Amazon said January 18, 2018 it had narrowed to 20 its options for a second headquarters for the sprawling technology and lifestyle company headed by Jeff Bezos, the world's richest individual. After 238 cities from North America submitted bids, Amazon announced its short list included three in the vicinity of the US capital Washington, and the Canadian city of Toronto. / AFP PHOTO / GETTY IMAGES NORTH AMERICA / David Ryder

US President Donald Trump renewed his long-running assault on Amazon.com Inc with an early morning tweet on March 29. But what measures can he actually take against the online retail giant? 

He could push for probes of consumer protection, privacy and antitrust issues. He could also step up his support for allowing states to collect sales tax on third-party purchases from Amazon, or seek to have the Postal Service charge more to deliver packages. And he could thwart Amazon’s aspirations to win a multibillion dollar Pentagon contract for cloud services.