Why Trump is losing ground on immigration to Harris?

I am not sure that this Washington Examiner story ("Why Trump is losing ground on immigration to Harris") is accurate.  Is former President Donald Trump in fact losing ground to Vice President Kamala Harris on immigration?  Immigration remains a leading issue in the 2024 presidential campaign.  Some might say that the issue's prominence -- one of Trump's signature issues -- alone is a benefit to the Trump campaign as it keeps Harris's immigration positions.

KJ