61.   Enforcement is uneven, so that a country may require an international driving permit officially, but not in practice.

62.   Enforcement will be difficult in a country now brimming with Internet cafes and free e-mail services.

63.   Even if enforcement is chancy, bad-boy clauses often act as restraints on retiree behavior.

64.   Even some farmers complain that lax enforcement is unfair to dairies that spend the extra money to control their wastes, while others are allowed to avoid the expense.

65.   Even those who support the ban, however, acknowledge that enforcement could be difficult.

66.   Even though there has been a longstanding federal policy to evict criminals from public housing, enforcement has at best been lax.

67.   Even when the laws are good, enforcement may not be.

68.   Election laws exist to restrain contributions and spending, but enforcement is sporadic and loopholes abound, Carmon said.

69.   Enforcement can sometimes be awkward.

70.   Enforcement has been infrequent.