mark shields and jennifer rubin are here to analyze a week of shake-ups at the trump campaign and other political news. all that and more on tonight's pbs newshour. >> major funding for the pbs newshour has been provided by: ♪ ♪ moving our economy for 160ur years. bnsf, the engine that connects us. lincoln financial is committed to helping you take charge of your future. ♪ ♪ >> supporting social entrepreneurs and their solutions to the world's most pressing problems-- w skollfoundation.org. >> the ford foundation. working with visionaries on the frontlines of social change worldwide. >> and with the ongoing support of these institutions: and friends of the newshour.d fr >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: today in campaign politics: a major resignation on donald trump's team, new details about hillary clinton's emails, and a visit to the flood zone in louisiana. lisa desjardins begins our coverage. >> reporter: for donald trump, a three-fold shift. first: opt

tnd join us online, and again here tomorrow evening with mark shields and jennifer rubin.r all of us at the pbs newshour, thank you and good night.li e t >> major funding for the pbs newshour has been provided by: >> lincoln financial-- committed to helping you take charge of your financial futuren >> the lemelson foundation. committed to improving lives through invention. in the u.s. and developing countries. ln.he web at lemelson.org. t >> and with the ongoing support of these institutions >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you.y bl captioning sponsored by newshour productions, llc captioned by media access group at wgbh access.wgbh.org >> this is "bbc world news america." funding of this presentation is made possible by the freeman foundation, newman's own foundation, giving all profits from newman's own to charity and pursuing the common good, kovler foundation, pursuing solutions for america's neglected needs, and aruba tourism authority. >> planning a vaca