The White House wants to make it much costlier for litigants to challenge its policies. It is proving to be an uphill battle. President Trump in a March memo ordered government lawyers to request the payment of bonds in lawsuits seeking to temporarily block his policies. The bonds, which could impose a daunting financial burden on many plaintiffs, are part of a campaign to deter what Republicans see as activist litigation and overreach by judges issuing broad injunctions against administration policies. Federal judges in the past couple of months have largely balked at the requests, ordering minimal bonds or none...