Her tenure has had controversies ranging from her pets and government contracts, to defending the killing of US citizens by federal agents.

Homeland security secretary was grilled in Senate hearing over immigration enforcement crackdown in Twin Cities

Both Republicans and Democrats criticised Noem for her leadership of the Department of Homeland Security.

The Republican senator threatened to hold up all Trump nominees until the DHS secretary answers his questions about her “disastrous” tenure.

Thom Tillis compared Kristi Noem’s tenure to the time she killed a 14-month-old dog and chalked it up to a leadership lesson, Alex Woodward writes as the Homeland Security…

He plans to nominate Republican Sen. Markwayne Mullin to be her replacement.

Kristi Noem faced criticism for the killing of two American citizens by federal agents, her relationship with Corey Lewandowski, and a $220 million ad campaign.

Noem’s tenure was marked by killings of US citizens by federal agents, a rumored affair and $220m spent on ads

Trump said March 5 he is replacing DHS Secretary Kristi Noem after scrutiny over a $220M ad campaign, naming Sen. Markwayne Mullin as successor.

Donald Trump said he would replace the secretary of the Department of Homeland Security. Noem’s tenure was marked by aggressive anti-immigration tactics and ICE and CBP’s killing…

Trump fired Kristi Noem as secretary of the Department of Homeland Security after lawmakers grilled her over an ad campaign that featured her.

WASHINGTON: US President Donald Trump on Thursday fired Kristi Noem as head of the Department of Homeland Security, the agency responsible for carrying out his sweeping…

Noem, a former governor, became a prominent figure in the Trump administration's controversial crackdown on immigration.

Noem was one of the administration's brightest stars when she stepped into the role, but has faced a mounting backlash in recent months.

Her tenure has had controversies ranging from her pets and government contracts, to defending the killing of US citizens by federal agents.

Many will regard the ex-secretary of homeland security, Trump’s first fired cabinet member, as the worst yet seen

Backlash grew against homeland security secretary after slew of controversies from Trump’s immigration crackdown

Firing of US homeland security secretary is first major personnel shakeup of Trump’s second term – key US politics stories from 5 March at a glance

La trayectoria de la recién destituida secretaria de Seguridad Nacional de Estados Unidos estuvo marcada por críticas a su falta de sensibilidad

Sen. Markwayne Mullin and ousted DHS Secretary Kristi Noem's responses were similar following the killing of 37-year-old ICU nurse Alex Pretti at the hands of federal agents in…

Trump said Mullin will lead the Department of Homeland Security while Noem assigned as special envoy.