The US is hardly the only country to block foreign investment &#x2F; sales&#x2F;mergers with foreign corporations on &quot;national security&quot; or &quot;national interest&quot; grounds. Here in Australia we have the Foreign Investment Review Board (FIRB) which does much the same thing. I guess one difference is that the US is a much larger population and economy than Australia&#x27;s, so when the US does it is more likely to be newsworthy on a global scale. Also, there are many high tech firms headquartered in the US, relatively few in Australia; most of the similar stories in Australia tend to revolve around mining, agriculture, and public infrastructure such as ports (and are thus less interesting to a site like HN).