The watchdog group Common Cause is calling for a congressional probe into whether President Trump is abusing his office to enrich his family, raising the alarm about what it calls “cronyism, nepotism, abuses of power and conflicts of interest” in Trump’s recent negotiations with China. Trump announced that he would save Chinese electronics company ZTE from collapse, just two days after Beijing invested $500 million into a Trump development project in Indonesia. A week before that, Ivanka Trump’s fashion business won approval for trademarks in China. Ivanka Trump abruptly left a conference call with reporters on Tuesday when asked about her business in China.