President Trump plans to nominate Kansas Gov. Sam Brownback to be ambassador-at-large for international religious freedom at the State Department, the White House announced Wednesday.

Brownback, a conservative former U.S. senator and member of the House, sponsored the International Religious Freedom Act of 1998, which promotes religious freedom as a foreign policy of the U.S.

His tenure as Kansas governor has been at times controversial. Brownback imposed the largest income tax cut in Kansas history, and cut the size of government, resulting in budget shortfalls. He fought his state supreme court for overturning death penalty verdicts and striking down abortion restrictions. In another ruling, the court determined the Republican-led legislature, backed by Brownback, had not adequately and equitably funded public schools.

Last month, the legislature overrode Brownback's veto of a bill that would undo some of his tax cuts and raise $1.2 billion over two years.

Brownback, who has also served as Kansas secretary of agriculture, was prevented by term limits from running for re-election as governor in 2018. If Brownback does vacate his office, he would be succeeded by his lieutenant governor, Jeffrey Colyer.

His nomination to join the State Department will be considered by the Senate.