The plan, he said, represents "a more rigorous enforcement of existing regulations."

This has led some to conclude that politicians do not want rigorous enforcement.

Stringent laws and rigorous enforcement are the only tools available to stop the violation of our ocean.

Then, rigorous enforcement of American law brought additional pain.

Philip, however, insisted on rigorous enforcement, which caused a lot of popular unrest.

But we must recognize that the announcement of an environmental policy and its rigorous enforcement are very different things.

But she's not unresponsive to rigorous enforcement of the program.

Since then, airlines say, there appears to be both more rigorous enforcement of the policies and wider compliance with them.

We need rigorous enforcement of all legislation so any complaints can be dealt with quickly.

For a continuous offender, then there should be the most rigorous enforcement of criminal sanctions.