President Donald Trump was expected to focus on immigration at a rally near Wichita, Kansas, on Monday, according to Fox News, as Republican Sen. Roger Marshall campaigns in a race that has drawn increased attention and outside spending. The event came weeks after federal immigration officers made more than 100 arrests during a three-day operation in the southwestern part of the state.

The contest between Marshall and Democratic challenger Adam Hamilton is drawing unusual scrutiny for Kansas, which has voted for Trump by double-digit margins in the last three presidential elections and has not elected a Democratic senator in nearly a century. The Cook Political Report, a nonpartisan election forecaster, moved the race to toss-up earlier in October, the source reported.

Marshall is seeking a second term and has generally aligned himself with Trump on major issues during the campaign. Hamilton, a megachurch pastor, has sought distance from Democratic leaders in Washington. He has said he would not support Senate Minority Leader Chuck Schumer of New York for another term in the position.

The immigration debate in Kansas has included both federal enforcement activity and questions about how ICE works with local authorities. The agency’s operation last month was called “Operation Safe Community — Kansas.” Marshall criticized the operation’s approach, saying on X that ICE should coordinate with local law enforcement when carrying out enforcement in the state. He argued that local police and sheriffs understand their communities and that cooperation can help protect officers and residents.

The White House has highlighted arrests in Kansas as part of its broader account of the administration’s immigration enforcement. Spokeswoman Lauren Bis told Fox News Digital that the president had secured the border and that millions of undocumented immigrants had left the country, while asserting that none had been released at the border during the stated period. Those figures and characterizations were presented by the White House.

The administration also identified several people it described as among the “worst of the worst” arrested by federal officers in Kansas. The White House said the individuals included people convicted of offenses ranging from murder and aggravated robbery to drug crimes and sex offenses. The source did not provide additional details about the cases or the circumstances of each arrest.

Republican groups have attacked Hamilton over immigration, with outside-group advertisements accusing him of supporting mass amnesty. Hamilton has rejected that characterization and criticized the previous administration’s border approach. In comments to the Johnson County Post cited by Fox News, he said that high numbers of border crossings strained communities and left immigration courts far behind. He also said he did not support open borders and that dangerous criminals should not remain in the country.

Trump’s Kansas appearance therefore took place against two related backdrops: a Republican administration emphasizing enforcement and a Senate contest in which both candidates have addressed immigration, though in different ways. Marshall has stressed coordination between ICE and local officers, while Hamilton has criticized past border management and denied supporting open borders. The supplied report did not include comments from either campaign specifically about the rally.