The United States is increasing tariffs on electric cars from China from 25% to 100%, the White House said on Tuesday as part on a crackdown on Chinese imports. The US government is also imposing new or significantly increased tariffs on solar cells, semiconductors, harbour cranes and certain medical products such as protective masks. The White House says the measures are needed because China is flooding global markets with artificially cheap exports. US President Joe Biden has acted despite striving for a stable relationship with Beijing, Lael Brainard, director of the National Economic Counc…