POV	Proof of Vaccine
SEM	Social Ecological Model
EFL	Expressive Function of Law
PRT	Psychological Reactance Theory
GRD	Geographic-Regression Discontinuity
TWFEE	Two-Way Fixed-Effects Estimation
DiD	Difference-in-Differences
HHS	The US Department of Health and Human Services
NASHP	National Academy for State Health Policy
EO	Executive Order
SB	Senate Bill
HB	House Bill