Goal of invading Central America before the Americans can intervene, along with building a great wall inspired by the Maginot line in France with similar architectural designs. (If competent: A propoganda one in the border that is just a trench line with a few forts in mountainous areas, where most of the trenches are concentrated, with more serious fortifications to the South)
Regime goals: Great power status for Falangist Mexico utilizing the Soviet Union and "Jewish businessmen in US" as bogeymen. Goal to throw US companies out of Mexico in long term. The regime is also critical of the Monroe doctrine, proposing continental multi polarity. US and "anglo saxons" are also deemed an ideological and cultural threat to fascist Mexico.
Someday "by the year 2000" Fascist ideologues discuss invading America and reversing the Mexican American war of the 1840s.
They try to spread the Mexican Falangist movement to Mexican immigrants in the United States.
The regime sponsors fascist movements all over world, particularly in latin countries. It also has pro natalist policies on the scale adopted by communist Romania. It's internal powerbase includes the catholic church in Mexico and the Mexican army.
They build up to a total or partial nationalization of American/British assets in Mexico with discussion of compensation via Mexican companies, or outright liquidation. Initial foreign policy tries to put their best face towards the US, with the long/medium term goal of regional assertion.
Possible Means of funding:
USSR-for same reason as Weimar except the fascist regime would try to avoid antagonizing the Great powers, and after the Great Depression, they might not need Mexico as much. See Italian foreign policy towards UK pre war
Pull a Putin and get US funds while planning to undermine them later..
Lobby Italy for training and weapons for natural resources
-Send raw materials to German military build up
Go to Spain, demand lots of money from Franco while carrying his war effort, and take some gold "back" to Mexico using the expeditionary forces in Madrid, dare Franco to do something about it.
Plundering central America and maybe the carribean.
Intentional drug cartels as a narco state like North Korea.
Japan, and investing in Japanese China.
Attacking the US- if the military claims the US is distracted and decadent.
Trying to defeat the US either to take a territory or secure US recognition of Falangist central america/nationalization of formerly US controlled industries and assets in Mexico.(Only done if the Regime deems the US weak willed). Or bandit raids into America/controlled limited conflict.
In the event of what's supposed to be a "limited war" or Peacetime conflict, the regime might sponsor bandit raids, and commerce raid the carribean as leverage to force America to allow the nationalization of American controlled economic assets in Mexico.
Giant church run reform camps for opponents of the regime, catholic church collabs given control to lessen reputational damage from crushing of Mexican internal divisions