by Nicholas Kamm, with Andrew Beatty in Washington BATON ROUGE, United States (AFP) — After a much-criticized delay, President Barack Obama visited flood-stricken Louisiana Tuesday, defending his administration’s response and urging citizens to pitch in and help ravaged communities. Obama — decked out in hiking boots and with shirt sleeves rolled up — touched down in Baton Rouge and toured a hard-hit and debris-strewn parish, promising Louisianans they would get all the help they need. […]