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And why were the people relocated from one overcrowded urban
areaNOLA) to another (e.g. San Antonio, Huston)? Most of the
Texas large (mega?) urban areas were short of school space,
inexpensive housing and social services because of the massive
influx of undocument immigrants [PC] even before the influx of
New Orleans refugees.

My solution would have been to relocate the displaced persons to
the very large number of smaller Texas urban and rural areas
which have lost population over the last two decades and thus
have a surplus of housing and school space. No one town should
be flooded with new people, just a family or two here and a
family or two there.

Because those small towns do not have the resources or the jobs for
their own population, much less hundreds or thousands more.