"reinforced its commitment" is a correct and usable phrase in written English.
It is often used in formal settings to indicate a renewal or strengthening of a commitment such as a pledge. For example: "The government reinforced its commitment to protect the environment by introducing new legislation."
HSC reinforced its commitment to its postdocs and graduate student trainees when it established a Research Training Centre (RTC).
The company also reinforced its commitment to spinning off its $31bn stake in Alibaba, the Chinese e-commerce business.
And the Fed, if anything, has reinforced its commitment to hold short-term interest rates near zero through next year and well into 2015.
The company recently reinforced its commitment with the Red Cross Society and the International Federation of the Red Cross to improve access to water and sanitation in Cote d'Ivoire's cocoa-growing communities.
In a statement, the media company reinforced its commitment to The Daily and said the restructuring would "enable the business to operate more efficiently and with even greater focus on the types of content that that consumers have gravitated towards since its launch".
Deputy First Minister John Swinney said the additional funding, which increases the government's capital contribution to £25m, reinforced its commitment to the "iconic" development.
Separately, the Rugby Football Union, the governing body of the sport in England, said it would be reinforcing its commitment to inclusion and diversity with its university rugby clubs.
Fear of a slowing economy will prompt China to reinforce its commitment to big investment projects; it aims to build 13 new motorways, 25 urban railways and more than 80 airports.
It could include language in the statement reinforcing its commitment to low rates.
Many in the market expect the central bank to ease policy again in the coming months to reinforce its commitment to pull the economy out of deflation.
A spokesman told the Journal, "By implementing this new, even stronger and more transparent policy, the Clinton Foundation is reinforcing its commitment to accountability while protecting programs that are improving the lives of millions of people around the world".
