Maternity Leave

I wanted to research maternity leave in different organizations and entities. I found the following:

Institution	Maternity Leave	Leave of Absence Policy	Policy: FMLA requires employers to provide 4 week paid of the 12 week parental leave.	Job Protected?
Carnegie Mellon	No	Yes	Maternity leave after the birth of a child is covered concurrently under Short Term Disability and FMLA for staff, or as a Faculty Parental Leave for faculty.”	Yes, 12 weeks of unpaid, job-protected leave for certain family and medical reasons
Harvard	Yes	yes	Up to 4 weeks paid leave for new parents who are primary care givers, up to 12 weeks(FMLA)	Family leave of up to 13 weeks for birth, adoptive or foster parents.
Federal Government	No	Yes	Federal Employees Paid Parental Leave Act of 2009: To provide that 4 of the 12 weeks of parental leave made available to a Federal employee shall be paid leave, and for other purposes.	Yes
State Level:depends on org size	No official policy	Yes	FMLA	Yes
Google	Yes	Yes	New moms working at Google get five months of paid maternity leave	yes

I learned that entities adopt policies that are set by the Federal government. In this case, the minimum of 4 weeks paid leave is complied with because of federal policy. This is extremely interesting because usually after birth a woman is medically recovered after 6 weeks.

The places that have been innovative and extended leave are the technical busineses like Google and facebook. It may be a matter of profit that determines the total amount of leave an employee gets. I think that maternity paid leave should be extended to more than 4 weeks and that the federal government should adopt a longer paid leave.The US could adopt creative leave strategies like those of the following countries:

Switzerland has 16 weeks of maternity leave with 80% paid leave

Germany: 14 weeks of leave, with 100% paid leave

United Kingdom has 52 weeks of leave with 90% paid leave.

Is it possible that there is injustice in the American System when it comes to maternity leave? Could the United States adopt a better policy? Could the United States afford a longer paid leave? Does the amount of  paid leave affect employee morale?