The phrase "a formidable obstacle in" is correct and usable in written English.
It can be used to describe a significant challenge or barrier encountered in a particular context or situation.
Example: "The lack of funding proved to be a formidable obstacle in the project's progress."
Alternatives: "a significant barrier to" or "a major hindrance in".
But Bradley Orr proved such a formidable obstacle in the path of Moses that the Palace player was eventually substituted.
But he has not gone yet and the elegant batsman remains a formidable obstacle in the way of South Africa's hopes of regaining the No 1 ranking.
Such cloud-based breakthroughs face a formidable obstacle in Europe, however: strict privacy laws that place rigid limits on the movement of information beyond the borders of the 27-country European Union.
The structural similarities of PKA and PKG have posed a formidable obstacle in the design of selective inhibitors that specifically target cyclic nucleotide-dependent protein kinases and show little inhibitory potency to other basophilic Ser/Thr-kinases.
The argument that the Second Amendment remains a formidable obstacle in the way of gun control, even if there were a political will to pass such legislation, is perhaps the most frustrating of the objections.
But in the year since Mr. Seabrook's arrest, advocates said that there was still "an enormous amount of work to be done," and that even in his absence the union remained a formidable obstacle in overhauling the jails.
That sounds like a formidable obstacle, but in his confirmation hearing earlier this month, Jeff Sessions ducked the question of what he would do.
However, as ARV costs fall, the shortage of human resources for health (HRH), including trained medical and support staff, will continue to be a formidable obstacle to providing effective ART in resource-limited settings.
Both underreporting and misclassification contribute significantly to the lack of visibility regarding the actual scope of hate crime against specific communities--and this in turn forms a formidable obstacle to developing effective policies to prevent hate crimes and help victims.
But "not-in-my-backyard" resistance will be a formidable obstacle, said Assemblyman Fred W. Thiele Jr., a Republican whose district includes the reservation.
Time constraints in clinical practice pose a formidable obstacle to introducing patient decision aids into the consultation process.
