overn this waiver issue. Rather, federal law does, even though jurisdiction in this case is bottomed on di rsity of citizenship. United Coal Cos. I. Powell Constr., 839 @ 2011 Thomson Reuters. No Claim to Orig. US Gov. Works. https://web2.westlaw.com/print/printstream.aspx?pbc=BC6E23F98cdestination=atp&utid=.