week on wall street. that volatility because of new recession fears. take a look at the dow right there. the big board up 271 points there. a better day following steps both in europe and china to stimulate growth. but the bigger challenge remains. can the trump white house and beijing settle a trade war, or will new tariffs be added by both powers later this year? now add this complication. just today a white house blessing of the biggest u.s. arms sales to taiwan in years, including new f-16 fighter jets. that is certain to anger beijing as the already delicate trade talks resume. aides describe the president is concerned about the market volatility and about talk of a potential election year recession. but at a campaign rally last night, optimism from the president and you might call this a warning of sorts. >> the united states right now has the hottest economy anywhere in the world. wages are rising, and you know who's the biggest beneficiary? blue collar workers.