In addition, the Center on Budget and Policy Priorities has written, "many low-income households that receive benefits still have trouble affording an adequate diet. An Institute of Medicine report identified several shortcomings with the current SNAP benefit allotment and noted that most household benefit levels are based on unrealistic assumptions about the cost of food, preparation time, and access to grocery stores. Many families face stark choices between purchasing food and paying for rent and other necessities. If they manage this shortfall by buying lower-cost but less nutritious foods, it can adversely affect their health." [2]
Directing farm subsidies or any other money to current and future SNAP beneficiaries would benefit millions, including working Americans: "The number of SNAP households that have earnings while participating in SNAP has more than tripled — from about 2 million in 2000 to 6.5 million in 2017. The share of all SNAP households that have earnings while participating in SNAP has also increased — from about 27 percent in 2000 to about 31 percent in 2017." [3]
Regardless of dealing with the very problematic farm subsidies, the president and congress must do something about food insecurity.
[1] https://www.salon.com/2014/01/19/what_i_learned_from_a_week_...
[2] [3] https://www.cbpp.org/research/food-assistance/the-supplement...
It's not like both of those things are not equally likely to happen (which is to say not likely)
One is long-term food security - even if global trade is mostly fine right now despite the current hiccups, there's no telling how it's going to be in a decade or two, and it's hard to ramp up production (due to lack of skillset, machinery and infrastructure) if you suddenly need it; so it makes all sense to pay some fraction of a percent of your GDP to ensure long-term strategic security of your food supply, especially if it looks like global tensions will eventually rise due to climate change.
The second aspect is that even in the current circumstances we're seeing rapid urbanization and depopulation of the countryside, which is generally seen as a problem for many areas. In a "natural" regime without rural subsidies this would happen even faster.