In a brand new assault on the worldwide consulting big McKinsey & Firm, Congress on Friday began an investigation into the agency’s position within the opioid disaster, sending a letter demanding information associated to its “enterprise practices, conflicts of curiosity and administration requirements.”

The 12-page letter, which was despatched by the Home Committee on Oversight and Reform, requested for names of McKinsey purchasers within the well being care business in addition to paperwork related to its work with opioid producers, distributors and retailers. The committee can also be taking a look at how McKinsey’s consulting for drugmakers might battle with work it has performed for the Meals and Drug Administration.

By advising opioid makers and “the federal company regulating their conduct,” McKinsey “might have had a major adverse influence on Individuals’ well being,” the committee mentioned.

The letter was signed by the committee’s chairwoman, Consultant Carolyn B. Maloney of New York, who requested that McKinsey produce the paperwork by Nov. 19. McKinsey has a coverage of not figuring out its purchasers or the recommendation it offers.

A spokesman for the agency on Friday mentioned McKinsey had “acquired the committee’s letter and can interact straight with the committee relating to their requests.”

This 12 months, McKinsey agreed to pay all 50 states greater than $600 million to settle investigations into the way it had helped “turbocharge” opioid gross sales, focusing totally on its work with Purdue Pharma, the maker of OxyContin. McKinsey didn’t admit any wrongdoing.

The request on Friday follows a narrower one on Aug. 23, from a bipartisan group of six U.S. senators searching for information from the F.D.A. on its work with McKinsey on the identical time that it was regulating opioid producers, calling that relationship “a possible battle of curiosity.” The senators requested for extra details about the agency’s work with the F.D.A. division that authorized sure courses of medicine, together with prescription opioids.

OxyContin and related painkillers will be addictive and vulnerable to abuse. From 1999 to 2019, almost 500,000 individuals in the US died of opioid overdoses, in accordance with the Facilities for Illness Management and Prevention.

The Home panel is searching for data on McKinsey’s “obvious failure to watch and forestall dangerous practices,” Ms. Maloney, a Democrat, wrote within the letter, addressed to the agency’s managing companion, Bob Sternfels.

Up to now a number of years, McKinsey has come below scrutiny from each Republicans and Democrats for a variety of its consulting initiatives. In October 2018, Senator Elizabeth Warren, a Massachusetts Democrat, requested the agency for extra details about its work in Saudi Arabia. Final 12 months, Senator Marco Rubio, a Florida Republican, requested McKinsey to reveal the names of Chinese language purchasers whose enterprise may battle with American nationwide pursuits.

The Home committee can also be searching for paperwork past McKinsey’s opioid work, citing situations when consultants might have helped corporations enhance drug costs or “block competitors” from cheaper generic medication.

Additionally below scrutiny is McKinsey’s in-house hedge fund, the McKinsey Funding Workplace Companions, a pension fund and funding car for companions that final 12 months reported greater than $31 billion in belongings below administration. The fund has held oblique investments in corporations together with its drugmaker purchasers. The committee desires an enumeration of all the fund’s investments and an inventory of McKinsey workers who’ve performed work with it since 2005.