LaMonica McIver has been accused of assault as the Trump administration accuses Democrats of obstructing immigration enforcement.

United States Representative LaMonica McIver has pleaded not guilty in a criminal case stemming from a visit to an immigration facility, saying the charges are an effort by the administration of President Donald Trump to “intimidate” her.

McIver entered her plea at a hearing on Wednesday. She faces charges of assaulting, resisting, impeding and interfering with federal officials during a May 9 congressional oversight visit to an immigrant detention centre in New Jersey.

“They will not intimidate me. They will not stop me from doing my job,” she said outside the courthouse in Newark.

The Trump administration has previously threatened to arrest and charge Democratic lawmakers over immigration-related issues.