- Tensions between the US and China are rising.
- The CEO of Chinese-owned TikTok will head to Washington in March to face a grilling from politicians.
- The showdown is symbolic of everything the US fears about China.
When TikTok CEO Shou Zi Chew turns up on Capitol Hill in March, he risks exacerbating tensions over not only safety on the much-loved video app but broader geopolitics.