Well: Energy is 54 % of the money. Which is mostly for the industry up north. Renewables are decorative in the percentage.
Rail: 15.63 % - again mostly for the norther industrial zone- and some link ups with the southern neighbours (under the guise of helping the backwards regions down there).
Roads: 13.94 % same though alot of it is also for tourism. But also logistics.
Ports: 7% Sofar its mostly a trade and industry support program- bluntly directed at becoming the usas new industrial heartland.
The problematic part is that most of this infrastructure is private loan based investment in partnership with the mexican goverment. US-companies will own significant parts of the infrastructure down there and thus have a handle on the government.
This is mostly a "re-industrialize" the us plan without having the problems with industr you have in the us.