. >> ifill: plus, jeffrey brown talks to kenneth feierg, the man charged with overseeinghe $21 million fund to compensate the wounded and the families of the dead.

. >> ifill: plus, jeffrey brown talks to kenneth feierg, the man charged with overseeinghe $21 million fund to compensate the wounded and the families of the dead. >> woodruff: then, we update the search for the source of poison- laced letters sent to president obama and a u.s. senator. >> ifill: ray suarez reports on the raging mississippi river floods that have inundated multiple states. >> reporter: steady downpours across the midwest have swollen streams, creeks and rivers beyond their banks. four people, in three states, have died in the floodwaters. >> woodruff: and margaret warner gets two views on whether food sent overseas to helporeigners in need should be bought from u.s. farmers and shipped on u.s. vessels. >> ifill: that's all ahead on tonight's "newshour." >> major funding for the pbs newshour has been provided by: >> and with the ongoing support f the instutions and fouatns. and... >> 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: federal investigators piec