The phrase "difficult to comply with" is correct and usable in written English.
You can use it when you want to express that something is hard to adhere to, either because it is too complex or demanding, or simply because you may not agree with it. For example, "The new regulations are difficult to comply with."
"But the law gets very difficult to comply with.
"Federal law makes it very difficult to comply with providing in-woods housing," he said.
She said Mr Abu Rideh had found it very difficult to comply with the order.
Now, Mayor Michael R. Bloomberg cynically proposes to make it more difficult to comply with the statute's prior notice requirements.
This could include vulnerable claimants with mental health or social functioning problems, who find it difficult to comply with directions".
They will be all the more difficult to comply with because of bizarre rules meaning NGOs campaigning together could be jointly liable for each other's costs.
The GPs described several barriers to taking on the role of broker and referring to mental health professionals including bureaucracy, unawareness of resources, liaison with other health care professionals and perceptions of patient adherence: [It is difficult] to comply with all the paperwork to go with mental health plans and then [choosing] which items.
In Windows 98, Internet Explorer is even more closely integrated into the operating system, making it more difficult for manufacturers to ship computers without Microsoft's browser -- and thus more difficult for Microsoft to comply with the injunction if the court applies it to the new operating system.
But, Mr. Varone said, architects, engineers and building owners fear it will be very difficult for owners to comply with the law.
Unless the character of Mr. Hussein's government changes significantly, it will be difficult for Iraq to comply with intrusive inspections, giving the Bush administration the provocation it is seeking.
And some auto executives also criticized the new proposal, saying it would be nearly as difficult for companies to comply with as earlier ideas, and could ultimately push manufacturing out of North America to cheaper areas.
