A view of the US Capitol and the Peace Monument in Washington, DC, on June 4, 2026. President Donald Trump's agenda faces a series of tests in the US Senate on Thursday, as lawmakers began a marathon amendment process on a $70 billion immigration enforcement bill after weeks of Republican anxiety over some of his most contentious policy moves. (Photo by Kent NISHIMURA / AFP via Getty Images)

A banner with an image of US President Donald Trump hands on the facade of the US Labor Department headquarters in Washington, DC, on June 4, 2026. President Donald Trump's agenda faces a series of tests in the US Senate on Thursday, as lawmakers began a marathon amendment process on a $70 billion immigration enforcement bill after weeks of Republican anxiety over some of his most contentious policy moves. (Photo by Kent NISHIMURA / AFP via Getty Images)

A view of the US Capitol in Washington, DC, on June 4, 2026. President Donald Trump's agenda faces a series of tests in the US Senate on Thursday, as lawmakers began a marathon amendment process on a $70 billion immigration enforcement bill after weeks of Republican anxiety over some of his most contentious policy moves. (Photo by Kent NISHIMURA / AFP via Getty Images)

A view of the US Capitol in Washington, DC, on June 4, 2026. President Donald Trump's agenda faces a series of tests in the US Senate on Thursday, as lawmakers began a marathon amendment process on a $70 billion immigration enforcement bill after weeks of Republican anxiety over some of his most contentious policy moves. (Photo by Kent NISHIMURA / AFP via Getty Images)

A view of the dome of the US Capitol in Washington, DC, on June 4, 2026. President Donald Trump's agenda faces a series of tests in the US Senate on Thursday, as lawmakers began a marathon amendment process on a $70 billion immigration enforcement bill after weeks of Republican anxiety over some of his most contentious policy moves. (Photo by Kent NISHIMURA / AFP via Getty Images)

A view of the dome of the US Capitol in Washington, DC, on June 4, 2026. President Donald Trump's agenda faces a series of tests in the US Senate on Thursday, as lawmakers began a marathon amendment process on a $70 billion immigration enforcement bill after weeks of Republican anxiety over some of his most contentious policy moves. (Photo by Kent NISHIMURA / AFP via Getty Images)

A view of the dome of the US Capitol in Washington, DC, on June 4, 2026. President Donald Trump's agenda faces a series of tests in the US Senate on Thursday, as lawmakers began a marathon amendment process on a $70 billion immigration enforcement bill after weeks of Republican anxiety over some of his most contentious policy moves. (Photo by Kent NISHIMURA / AFP via Getty Images)

A view of the dome of the US Capitol in Washington, DC, on June 4, 2026. President Donald Trump's agenda faces a series of tests in the US Senate on Thursday, as lawmakers began a marathon amendment process on a $70 billion immigration enforcement bill after weeks of Republican anxiety over some of his most contentious policy moves. (Photo by Kent NISHIMURA / AFP via Getty Images)