On the FBI agents computer, we see that Ruth Langmore's birthday is 9/7/1998. However, she claims to be 19 years old during her stripper interview even though Marty states that it is not yet the 4th of July in his phone conversation. She would still be 18 years old for at least two more months.
When the undercover FBI agent go search for Ruth in his computer her DOB is 09-07-1998. But in the 2nd episode when the police office shows her profile in the computer to Martyn and Wendy her DOB is different: 03-21-1998.
Taxi cabs with the famous VW Type 1 with the distinctive green/white livery in Mexico city were discontinued in 2006 for a pink/white livery and 4 four door cars for given service.
Charlotte was born in November or December of 2002 just after Obama's November 2002 election to the Illinois State Senate. [1.8 03:53] She would not be 15 until November/December 2017. Marty tells a "wolf whistler" during simmer of 2017 that Charlotte is only 15. This error continues into the Spring of 2018 when Charlotte is still 15 but would have to be 16 in order to be emancipated, have a driver's license and register a motor vehicle.
When the FBI agent looks up Ruth in the database, it says on the computer screen her eyes are blond and her hair is blue.
The Tax Equity and Fiscal Responsibility Act of 1982 phased bearer securities ("bearer bonds") out of U.S. markets because of their susceptibility to financial crimes.
40 min in: In rear-facing shots, Marty's words don't remotely match his mouth.
On the phone, Wendy says that the only place to get a good cup of coffee is at the Piggly Wiggly. This is a grocery chain with stores mostly east of the Mississippi. There are none in Missouri.
The street corner where it's supposed to be staged in Mexico, does not correspond to any factual city in the country.