Histogram of Constraints per Law. Sharyn O’Halloran et al. rsf 2016;2:87-109 Copyright © 2016 by Russell Sage Foundation. All rights reserved. Printed in the United States of America. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Reproduction by the United States Government in whole or in part is permitted for any purpose. Direct correspondence to: Sharyn O’Halloran at so33@columbia.edu, Department of Political Science, Columbia University, 420 West 118th St., New York, NY 10027; Sameer Maskey at smaskey@cs.columbia.edu, Geraldine McAllister at gam2116@columbia.edu, David K. Park at dkp7@columbia.edu; and Kaiping Chen at kpchen23@stanford.edu.