The phrase "an effort to obstruct" is correct and usable in written English.
It can be used when describing an attempt or action aimed at hindering or preventing something from happening.
Example: "The committee launched an effort to obstruct the proposed legislation, arguing it would have negative consequences."
Alternatives: "a bid to hinder" or "an attempt to impede".
He saw that order as an effort to obstruct justice, and he rejected it.
Rather than being a prescient effort to promote consumer regulation, this report was seen at the time as the exact opposite: an effort to obstruct serious regulation.
When the bureau began investigating his activities, he also misled investigators about the affairs and contacted two witnesses in an effort to obstruct the investigation, the report said.
Since then, the special counsel has begun examining Mr. Trump's actions, including his firing of Mr. Comey, and whether they constitute an effort to obstruct the investigation itself.
His dismissal of Mr. Comey has been criticized as an effort to obstruct the F.B.I.'s investigation into Mr. Trump's campaign and possible collusion with Russia.
"The filing of endless litigation in an effort to obstruct the will of the people of Texas is what we have come to expect from Attorney General Eric Holder and President Obama," Mr. Perry said.
* This office determined that the evidence was insufficient to prove beyond a reasonable doubt that any White House official, or President or Mrs. Clinton, was involved in any effort to obstruct justice in this matter.
(Maybe there was a page about it in Debrett's Guide; perhaps that dreadful social vandal Nancy Mitford had determined that any effort to obstruct operational paedophiles was non-U).
He is likely collecting a pile of evidence, much of it unknown to Trump, to piece together a picture of an ongoing effort to obstruct the Russia investigation.
They have been leading a determined effort to obstruct the formal appointment of Edward Luck, a professor at Columbia University, as a special UN adviser on the issue.
Legal experts said prosecutors could view floating the idea of a presidential pardon to people under investigation as a criminal effort to obstruct justice.
