What legislative action can be taken to prevent the movement of harmful substances?

Issuing embargoes is an effective legislative action that can prevent the movement of harmful substances across borders or within the country. An embargo is a government order that restricts trade or exchange with a specific country or the exchange of specific goods. By implementing an embargo on certain materials, especially those deemed hazardous or toxic, governments can control and limit their importation and exportation. This is particularly vital for preventing the spread of harmful substances that may pose risks to public health or the environment.

Through embargoes, authorities can monitor and restrict the flow of dangerous goods, thus safeguarding communities from potential threats, such as pollution or exposure to hazardous waste. This method goes beyond mere regulation by actively prohibiting any trade involving these substances, making it a strong tool for ensuring safety.

In contrast, while enforcing tariffs, regulating transportation, and increasing inspections can all play roles in managing hazardous materials, they do not directly prevent their movement. Tariffs might increase costs but won't stop the transfer of substances. Transportation regulations set guidelines for safe handling but may not eliminate the action of moving harmful substances entirely. Increased inspections can help identify and mitigate risks but might only serve as a reactive measure rather than a way to proactively stop harmful substances from entering or moving through a region.