  The first 1/fb of LHC searches have set impressive limits on new colored
particles decaying to missing energy. We address the implication of these
searches for naturalness in supersymmetry (SUSY). General bottom-up
considerations of natural electroweak symmetry breaking show that higgsinos,
stops, and the gluino should not be too far above the weak scale. The rest of
the spectrum, including the squarks of the first two generations, can be
heavier and beyond the current LHC reach. We have used collider simulations to
determine the limits that all of the 1/fb searches pose on higgsinos, stops,
and the gluino. We find that stops and the left-handed sbottom are starting to
be constrained and must be heavier than about 200-300 GeV when decaying to
higgsinos. The gluino must be heavier than about 600-800 GeV when it decays to
stops and sbottoms. While these findings point toward scenarios with a lighter
third generation split from the other squarks, we do find that moderately-tuned
regions remain, where the gluino is just above 1 TeV and all the squarks are
degenerate and light. Among all the searches, jets plus missing energy and
same-sign dileptons often provide the most powerful probes of natural SUSY.
Overall, our results indicate that natural SUSY has survived the first 1/fb of
data. The LHC is now on the brink of exploring the most interesting region of
SUSY parameter space.
