Tenth Amendment Center

In reading the Constitution, we can plainly see that Congress possesses the power “to regulate commerce with foreign nations, to raise and support armies, to grant letters of marque and reprisal, to provide for the common defense,” and even “to declare war.” Congress shares, with the President, the power to make treaties and to [...]

The US government is now giving your tax dollars to the Mexican government so that government can improve its ability to tap telephone calls and emails.
From the Los Angeles Times report:
Mexico is expanding its ability to tap telephone calls and e-mail using money from the U.S. government, a move that underlines how the country’s conservative [...]