text:  The U.S. Army Chorus will pay special tribute to members of the military, past and present, and Olympic athletes will get a send-off. The Capitol Fourth will broadcast live on PBS and stream on YouTube. Elizabeth Blair, NPR News, Washington. The 27-nation European Union is becoming the latest group to slap stiff tariffs on cheap imported Chinese electric vehicles in an attempt to protect the domestic market there. You contending hefty government subsidies along with the country's burgeoning export market