I found this claim to be true. In an article produced by news outlet Political, it is stated that Trump is threatening the idea of invoking the Insurrection Act in order to help advance his agenda of federal criminal crackdown specifically in Portland.
In a video published by the Wall Street Journal, Trump himself says while in the Oval Office that he would invoke the Insurrection Act, "if it was necessary." The Insurrection Act, an act in which gives the president the power to deploy military for domestic law enforcement, hasn't been put into order since the LA riots of 1992. Additionally, from this article from BCC it is clear that threatening the use of the Insurrection Act was a part of Trump's agenda from his campaign, cracking down on illegal immigration and crime in bigger, mostly democratic cities in the US. On Trump's first day of office in January of 2025, he even asked for "recommendations regarding additional actions that may be necessary to obtain complete operational control of the southern border, including whether to invoke the Insurrection Act of 1807." Both BCC and Wall Street Journal place in middle or balanced bias on the Ad Forbes Media chart.
This article from Oregon Public Broadcast supports the fact that Trump is trying to use the Insurrection Act, despite it being unwarranted from the Governor of Oregon, Tina Kotek. Even officials who Trump appointed, are viewing this as unlawful, "Over the weekend, Karin Immergut, a federal judge who was appointed by Trump, prevented the president from deploying members of the Oregon National Guard to the U.S. Immigration and Customs Enforcement facility in South Portland." I tried reaching out to the Trump Administration to receive a comment, but got no response back.