Donald Trump donated thousands of dollars to extreme leftists in California, such as Jerry Brown and Gavin Newsom. But that was last decade, which was part of the “ancient” history before Trump’s cathartic conversion. More recently, while conservatives were fighting the Gang of Eight amnesty bill and Obama’s sanctuary nation policies, Trump donated $6,000 to Kamala Harris, the California attorney general who is, perhaps, one of the most notorious supporters of sanctuary cities in the country. In 2014, his daughter, Ivanka, also cut a $2,000 check to the queen of sanctuary cities. That was after Harris championed the despicable Trust Act, which turned the entire state of California into a sanctuary for illegals. Coupled with her activities during her first term as attorney general and her prior work as San Francisco district attorney, Harris is one of the leftists most responsible for the policies that led to the murder of Kate Steinle. - See more at: https://www.conservativereview.com/commentary/2016/03/trump-donated-to-queen-of-sanctuary-cities#sthash.gQuv3HWC.dpuf
In other words, you have no idea whether Trump’s discussion of defunding sanctuary cities had an effect on this legislation or not. Being that sanctuary cities have been around for years, and there was never the political will in Congress to pass a bill to defund them, until Trump brought the issue to the public’s awareness last year, the likely hood of Trump’s campaign having no effect is low.
Your discussion of who Trump donated to prior to becoming a politician is irrelevant to that discussion. You have shifted the argument. To argue that Congress based their decision to pass this legislation on who Trump donated to 2 years ago makes no sense. If you were to interview Congress and ask them if the facts you cited regarding who Trump donated to in the past effected their decision to pass this legislation, the number who would answer in the affirmative would be approximately 0. I doubt many if any of them are even aware of the facts you cited in your response, let alone, were influenced by them.
Congressmen are political animals. It’s the political climate that effects their decisions on legislation. Whatever contrary positions Trump may have had on this issue in the past, when he made this an issue early in his campaign, it changed the political climate and made it clear to Congress where popular opinion stood on this issue.