Global Cops: Will US Jail Chinese Tech Exec?

The shock arrest of Chinese telecoms giant Huawei executive Meng Wanzhou in Canada, reportedly on a US request, over allegations that her company sold products to Iran in violation of US sanctions, has opened a huge Pandora's box. If this member of the Chinese political and business elite is jailed in the US, what will happen to US/China relations? Trade war? US execs arrested in China? Something far worse? Did Trump have a clue about this? Was he briefed on the full implications?