Now, Asharaf says, he and his brother have given up on trying to vigorously enforce the law that so many others defy.

NPR: Gaza Clans Occupying Political Vacuum

Samsung said it "intends to vigorously enforce its intellectual property rights, and these lawsuits reflect Samsung LED's commitment to that enforcement", the company said in a statement.

BBC: Visitors to a Samsung trade stand

They want to make clear they will vigorously enforce federal voting laws but are equally determined not to intrude in a process run almost entirely by state officials.

CNN: Federal observers and monitors heading to polls

And we will ensure that these sanctions are vigorously enforced, just as we continue to refine and enforce our own sanctions on Iran alongside our friends and our allies.

WHITEHOUSE: President Obama on Iran Sanctions

They can vigorously enforce antitrust laws and maintain a pro-competitive bias to securing equal access for service providers to such networks as telephone, wireless and cable systems.

ECONOMIST: Regulating the Internet

More formally, government can vigorously enforce laws against the use of force, fraud and criminal collusion, and use tort law to hold people liable for harm they cause others.

WSJ: Charles Murray: Why Capitalism Has an Image Problem