Moreover, the new parliament will have a new political party that is likely to challenge the government in a far more innovative manner than the old opposition groups did. (blog.politics.ox.ac.uk)
They don't seem able to challenge government policy of whatever colour when they know a policy will damage the education system. (schoolsweek.co.uk)
Korean citizens have successfully challenged government regulations in cases concerning the freedom to work and similar protected labour law rights. (globallegalinsights.com)