UnitedHealth has sought meetings with US President Donald Trump, although it has not secured one yet, the Wall Street Journal reported on Sunday. The attempts are part of a bolstered lobbying effort in Washington, DC, by the top US health insurer at a time it faces numerous regulatory challenges, the paper reported. UnitedHealth has been grappling with high costs and federal investigations, including a criminal one into its Medicare billing practices, which have pushed its share price down around 30% this year. Stephen Hemsley returned to the CEO role in May, after the ouster of Andrew Witty, and promised to regain investor trust. Hemsley recently met Trump's chief of staff, Susie Wiles, although the criminal investigation was not discussed or...