Counterpoint: Just because its the law doesn't mean anyone gets it.

I think the map isn't very helpful. I would be interested in seeing how many women have access to maternal leave in the U.S. I best the number is surprisingly high. Also, many small employers are willing to work with parents. A mandate doesn't give any flexibility. For example, perhaps a parent would prefer going part-time for several months instead of 6 weeks paid. Employers compete for hires, why not allow them the flexibility to design their own benefits?

Then those who prioritize it will take jobs where it is available.

By mandating it, an employer has to consider the possibility whenever they hire someone, and so salaries will be lower as a result. If the employee doesn't get pregnant and use the leave, their salary has been kept lower with no benefit to them.