  Recent developments in the Standard Model analysis of semileptonic
charged-current processes involving light quarks have revealed $\sim 3\sigma$
tensions in Cabibbo universality tests involving meson, neutron, and nuclear
beta decays. In this paper, we explore beyond the Standard Model explanations
of this so-called Cabibbo Angle Anomaly in the framework of the Standard Model
Effective Field Theory (SMEFT), including not only low-energy charged current
processes (`L'), but also electroweak precision observables (`EW') and
Drell-Yan collider processes (`C') that probe the same underlying physics
across a broad range of energy scales. The resulting `CLEW' framework not only
allows one to test explanations of the Cabibbo Angle Anomaly, but is set up to
provide near model-independent analyses with minimal assumptions on the flavor
structure of the SMEFT operators. Besides the global analysis, we consider a
large number of simpler scenarios, each with a subset of SMEFT operators, and
investigate how much they improve upon the Standard Model fit. We find that the
most favored scenarios, as judged by the Akaike Information Criterion, are
those that involve right-handed charged currents. Additional interactions,
namely oblique operators, terms modifying the Fermi constant, and operators
involving right-handed neutral currents, play a role if the CDF determination
of the $W$ mass is included in the analysis.
