Cross Border Buses, US to Mexico, Mexico to Guatemala Page Six
Bus Travel Mexico, Cross Border
The Cross Border Bus can be convenient.  
You stay on the same bus and only get off briefly to
a custom check were you press a button for the
taxable items that you failed to declare.  
You present your passport, secure you visa, and
then board the same bus for the remainder of the
trip.

Caution:
Don't transport fruits, meat, plants, and, (obvious)
drugs.  See
David Rice the Venezuela welcome
Drug sniffing dogs are in use at border crossing
check stations and at check stations within the US
border and within Mexico.  

Caution:
Watch your luggage at the border check station.-
stick with your bags and follow them through the
xray and check stations.  Keep essentials in your
day pack or on your person, your passport, visa
ATM/ credit cards, camera, laptop and money.

Tufesa Bus:
Tufesa Bus Line runs luxury first class buses in the
US and Mexico and they make the cross border
trip.  
They run from Salt Lake City, Las Vegas, NV, and
16 California cities to Guadalajara, Mexico with
stops in major cities along the way.  
They do not, however, make sufficient allowance
for the securing of a visa at the border (Nogales).  
Their passengers are mostly Mexican with
Mexican passports and they do not need a visa.
(visas are not required of foreign visitors for  short
stays or stays in the vicinity of the border)
The Tufesa bus for Guadalajara stops at a
Nogales, MX terminal for a half hour but the
terminal is over a mile away from the actual border
where you get your visa.

Visa / Tourist Card
If your stay in Mexico will be longer than 72 hours
and you will go south beyond the border State of
Sonora or beyond Baja  you should get the 180
day visa, often called a Tourist Card.

Two Workarounds:
.     One way around this is to apply for a visa at a
Mexican consulate well before you reach the
border.  Large cities   in the US will have such
consulates. The consulate in Tucson AZ does not
issue a visa.

Another way around this would be to buy a ticket to
the border only,  (Nogales in AZ)   Leave the bus
and take all of your luggage with you.  Get your
visa at the border crossing. (6 month visa 260
Pesos)
Take a $7 USD cab to the Tufesa station, buy a
ticket and re-board the bus if it hasn't left.
This is the safest way to both secure your luggage
and save your ticket price, although it hardly
makes for a convenient cross border trip.
Bus Across the Border:
actually have routes that cross
the US, Mexican Border.  Others
cross the Mexico, Guatemala
border.
This article will discuss those bus
lines and mention this
convenience while touching on a
few problems they pose.
Several other first class bus lines run to Mazatlan or
Culiacan  from Nogales, Mexico Main Bus Station
right next to the new Tufesa station.
 TBC,  Tap,
Elite
and Omnibus run luxury buses south.  If you
do miss the Tufesa bus you will have options.