Agence France-Presse: US House of Representatives Speaker Nancy Pelosi, a longtime critic of China’s rule over Tibet and its rights record, was to arrive in Shanghai Sunday for a trip focused on energy and climate change. Pelosi was expected in the Chinese financial hub mid-afternoon, Susan Stevenson, a spokeswoman at the US embassy in Beijing, told AFP, but she was unaware of who the top US official was going to meet. Pelosi was also scheduled to attend a clean energy forum in Beijing Tuesday along …