My recommendation on sodium is only for added sodoum in packaged &/or processed foods as does not apply to sodium that occurs naturally in food.
Also, the recommendation is sodium in mgs/calories and not sodium in grams.
While some natural foods may exceed the recommended 1:1 guideline, natural foods average about a .25:1 ratio. There are a few veggies that are higher but at 100 cal/lb, its impossible to consume a significant amount of them
Salsa is a condiment and my guideline for condiments is 4:1 and there are salsa's that meet (or beat) the guideline as does the one you found. In addition, you can look at the ratio for the full recipe with the salsa. So a salsa may be 4:1 but the ratio of the rice & bean recipe with a little salsa added will easily be under 1:1
It's also always important to put everything in perspective.
My recommendations are to limit packaged & processed foods and to get most all (>75%) your calories from plant foods in their natural (no salt added) state.
It really is simple. All my Fast Food meals on both DVDs are all no salt added and show how easy it is to meet and surpass my guidelines.
So, consume a diet made up of predominately whole natural foods. Limit added sodium to no more than 1:1 on packaged foods and you will easily be under the AI recommended by the IOM.
PS A packaged salsa does not count as "food in its natural state"