WASHINGTON — House Intelligence Committee Republicans said Thursday that opposition to Donald J. Trump by the party’s national security establishment had opened the door for two foreign policy advisers whose interactions with Russian intelligence prompted F.B.I. scrutiny.

The Republicans said they had found no evidence that either man, George Papadopoulos and Carter Page, had colluded with the Russians, despite the F.B.I.’s interest in the men. Nor did campaign advisers and aides provide evidence that any member of the Trump campaign had colluded either, according to summaries of 44 findings and more than two dozen recommendations the committee voted to release Thursday.

“When asked directly, none of the interviewed witnesses provided evidence of collusion, coordination or conspiracy between the Trump campaign and the Russian government,” one of the findings read.

First previewed last week, the findings are the culmination of a year-old investigation by the committee. Democrats say the Republicans hurried the investigation, ignored crucial evidence and failed to follow obvious leads in an effort to clear Mr. Trump.