What can Mexico City do to stop the sinking?

González urges action to address the issues, such as finding alternative sources of drinking water, artificial aquifer recharge and renovating the water infrastructure, some of which are more than 100 years old. The measures may cost up to US $1 billion per year, for the coming 15 years.

Explanation:

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.