"pose serious challenges" is correct and usable in written English.
You can use it to describe a difficult situation. For example: "The expanding population in the city poses serious challenges for its infrastructure."
This could pose serious challenges to today's incumbents.
"But I know it will pose serious challenges to run a government by Skype from the Hague".
"The overwhelming presence of Chinese ships, including military and paramilitary ships, and the issuance of threats pose serious challenges for the region as a whole," he said.
"We are also concerned about the length of the transition period, which at 12 months will pose serious challenges to many local authorities.
The case could pose serious challenges for Rio Tinto, one of the world's biggest mining companies, as it tries to complete iron ore negotiations this year with China.
While consumer spending, the nation's economic engine, has been surprisingly resilient of late, a more sweeping reduction in credit card limits could pose serious challenges for hard-pressed consumers and, in turn, the broader economy.
The conception of the mind as a tabula rasa posed serious challenges for empiricists.
The Internet's popularity often poses serious challenges to the government.
For novelists like Thackeray, she observed, expressing abstract notions like truth posed serious challenges.
The harsh conditions have long posed serious challenges to agricultural pursuits, resulting in irregular crop output and periodic bouts of large-scale famine.
The scale and location of the project posed serious challenges — challenges that could not be solved by the conventional development formulas.
