Warren and Sanders are undoubtedly going to argue that Biden (and, by implication, Obama) is far too weak on China. Will their arguments persuade the Democratic electorate?
Not if he handles them properly. The Obama/Biden approach to China was to create a rules-based system with the support of our allies–the TPP. What do the fundis have to offer as an alternative? If they don’t like the TPP, that would suggest that they support aggressive unilateral actions–in other words, they agree with Trump, which is hardly a winning argument with most Democrats. If they think the answer is to subsidize national tech champions, isn’t that the kind of corporate welfare that is the hallmark of a “rigged” system?