GRAND RAPIDS, MI — The DeVos family is ending its financial support of U.S. Rep. Justin Amash, who drew controversy last weekend when he announced on Twitter that President Donald Trump “engaged in impeachable conduct.”

“DeVos family members have not made campaign contributions to Congressman Amash during this political cycle and based on earlier discussions have no plans to do so,” said Nick Wasmiller, a family spokesperson.

Amash, a Republican from Cascade Township who represents Michigan’s 3rd Congressional District, became the first Republican congressman to support impeachment proceedings based on findings in U.S. Special Counsel Robert Mueller’s investigation into 2016 election interference. The investigation did not establish Trump or any of his aides coordinated with Russia in its efforts to influence the 2016 election, but left open the question of whether Trump obstructed justice.

Wasmiller said Amash’s most recent comments were not the driving factor behind the family’s decision.

“Recent statements by Amash have not changed the family’s thinking regarding its intention to provide future support,” he said. He said the family has experienced “increasing concerns about a lack of representation for the 3rd Congressional” district.

He also said the family has expressed concerns about the “inability” of Amash, who was first elected to Congress in 2010, "to advance efforts connected to important policy matters.” Wasmiller declined to offer further specifics.

The DeVos family — led by the late Amway co-founder Rich DeVos — has been a high-profile player in Republican politics for decades. In the 2013-14 election cycle, the last time Amash faced a strong primary competitor, the family contributed about $65,000 to his campaign, said Craig Mauger, executive director of the Michigan Campaign Finance Network, a nonprofit watchdog group.

The DeVos family stuck by Amash in 2014, even as some Grand Rapids business leaders who once backed him threw their money and support behind his challenger, businessman Brian Ellis. Amash defeated Ellis by about 57 to 43 percent.

Amash could not immediately be reached for comment Wednesday afternoon.

Wasmiller is the director of communications for RDV Corporation, the DeVos family office. He said U.S. Secretary of Education Betsy DeVos has resigned from her role at RDV Corporation and was not involved in the discussion to no longer support Amash.

Two people — state Rep. Jim Lower, R-Greenville, and Tom Norton, the former president of the Village of Sand Lake in Kent County — have announced their intention to challenge Amash in the August 2020 Republican primary. The conservative-leaning 3rd Congressional District encompasses Kent, Barry, Ionia, Montcalm and Calhoun counties.

Wasmiller said the DeVos family has not chosen a candidate to support in the August 2020 primary.

“It’s certainly far off at this point,” he said, adding that the family will go through its standard process to decide if it will support a particular candidate.

Mauger said the DeVoses “are the biggest political givers in Michigan by far.”

“That’s not to say they’re the only large donors that would play (a role) in a race for Congress like this,” he said.