AVOID DRUG OFFENSES:
Mexico rigorously prosecutes drug cases. Under Mexican law, possession of and trafficking in illegal drugs are federal offenses. For drug trafficking, bail does not exist. Convicted offenders can expect lengthy jail sentences and fines. Sentences for possession of drugs in Mexico can be as long as 25 years plus fines. Just as in the US, the purchase of controlled medication requires a doctor's prescription. The Mexican list of controlled medication differs from the US list and Mexican public health laws concerning controlled medication are unclear. Possession of excessive amounts of a psychotropic drug such as valium can result in your arrest if the authorities suspect abuse. Mexican law does not differentiate between types of narcotics. Heroin, marijuana, and amphetamines, for example, are treated the same. Offenders found guilty of possessing more than a token amount of any narcotic substance are subject to a
minimum sentence of 10 years, and it is not uncommon for persons charged with drug offenses to be detained for up to 1 year before a verdict is reached.
Remember, if narcotics are found in your vehicle, you are subject to arrest and your vehicle can be confiscated. Your Mexican Auto Insurance will not cover this.
FIREARMS:
The Department of State warns US citizens against taking any type of firearm or ammunition into Mexico without prior written authorization from the Mexican authorities. Entering Mexico with a firearm or a
single round of ammunition carries a penalty of up to five years in jail, even if the firearm or ammunition is taken into Mexico unintentionally. The
Mexican government strictly enforces its laws restricting the entry of firearms and ammunition along all land borders and at air and seaports. This has resulted in arrests, convictions, and long prison sentences for US citizens, even those who unintentionally crossed the border with firearms or ammunition in their possession. US citizens approaching Mexico along the land border who realize they are in possession of unauthorized firearms or ammunition should not seek to enter Mexico. The only way to legally import firearms and/or ammunition into Mexico is to secure a permit in advance from the Mexican Embassy in Washington, D.C. or from a Mexican consulate.
http://www.mexadventure.com/Mexican_Laws.cfmFood for thought....