By Lester Holt, NBC News anchor
I hope you're having a good holiday weekend. We're back on the air tonight with the story of mounting political headaches for President Obama as he returns from vacation.
Overnight, one of his special advisors on the environment submitted his resignation after his incendiary statements about Republicans and association with a fringe 9/11 conspiracy movement became public. An attack from the right over the president's planned speech to the nation's school kids is also kicking up dust, just as he tries to refocus the nation on his vision for health care reform.
We'll also be reporting on a suspected swine flu outbreak that has already sidelined as many 2,000 students at a major West Coast university, and on efforts to control that major wildfire outside Los Angeles.
Plus, there are some big changes in the Internet search engine business to tell you about.
I hope you'll join us tonight for NBC Nightly News.